2nd Grade Biodiversity and Humans

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2 Slide 2 / 129 2nd Grade Biodiversity and Humans

3 Slide 3 / 129 Table of Contents Click on the topic to go to that section Biodiversity Types of Living Things Living Things On Land Living Things In The Water Ecosystems and Organisms Biodiversity and Humans

4 Slide 4 / 129 Biodiversity Return to Table of Contents

5 Slide 5 / 129 Diversity When something is diverse, that means it has a large variety or lots of different types of things. Which picture shows the largest variety of fruits/veggies? Click in the blue box to check your answer. This picture has the most different types of fruits/veggies. It has the highest diversity of the three pictures.

6 Slide 6 / 129 Diversity Tulips are beautiful flowers that bloom in the spring. Circle the tulip field that has the highest diversity?

7 Slide 7 / 129 Bio Look at the following words: Biology Biography Biotechnology What do all of these words have in common?

8 Slide 8 / 129 Bio Biology is the study of living things. A biography is the story of someone's life. Biotechnology is the use of living things to create useful products. What do you think "bio" means? Talk about it with a partner.

9 Slide 9 / 129 Bio Bio means life. If we combine bio with diversity, we get biodiversity. What do you think biodiversity means? Biodiversity is the variety of living things in an area.

10 Slide 10 / 129 Biodiversity Which picture shows the highest biodiversity?

11 Slide 11 / 129 Biodiversity is Healthy An area with higher biodiversity is healthier than an area with lower biodiversity. Look at the pictures below. Which is the healthiest area? Forest with one type of tree. Forest with many different trees.

12 Slide 12 / 129 The Earth Has An Abundance of Life! Our planet has SO MANY organisms. We have not found them all yet! Everyday more organisms are discovered. Maybe one day you can discover a new plant or animal! Click the leafy sea dragon to watch a video about 25 bizarre animals on Earth.

13 Slide 13 / "Bio" means A plants B animals C all living things D variety

14 Slide 13 (Answer) / "Bio" means A plants B animals C all living things Answer C D variety [This object is a pull tab]

15 Slide 14 / Which picture has the highest diversity of fruit? A B C

16 Slide 14 (Answer) / Which picture has the highest diversity of fruit? A B C Answer B [This object is a pull tab]

17 Slide 15 / Earth is healthy when there is low biodiversity. True False

18 Slide 15 (Answer) / Earth is healthy when there is low biodiversity. True False Answer False [This object is a pull tab]

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23 Slide 20 / 129 Biodiversity Collage Earth has about 8.7 million living things on it! Use magazine pictures to create your own collage of the biodiversity of Earth.

24 Slide 21 / 129 Types of Living Things Return to Table of Contents

25 Slide 22 / 129 Types of Living Things Living things can be categorized by the way they get food. Some living things make their own food. Some living things find and eat their food. Some living things eat dead plants and animals.

26 Slide 23 / 129 Producers Living things that make their own food are called producers. They use the sun to make (produce) their food. This group includes all plants.

27 Slide 24 / 129 Producers Review: In what part of a producer is food made? Click in the box for a hint.

28 Slide 25 / Organisms are organized by. A what they look like B how they get their food C if they have wings

29 Slide 25 (Answer) / Organisms are organized by. A what they look like B how they get their food Answer C if they have wings B [This object is a pull tab]

30 Slide 26 / Producers get food by A finding it. B making it themselves. C breaking down waste.

31 Slide 26 (Answer) / Producers get food by A finding it. B making it themselves. Answer C breaking down waste. B [This object is a pull tab]

32 Slide 27 / An example of a producer is a. A cactus B sheep C tiger

33 Slide 27 (Answer) / An example of a producer is a. A cactus B sheep C tiger Answer A [This object is a pull tab]

34 Slide 28 / Plants make food in their. A roots B stems C flowers D leaves

35 Slide 28 (Answer) / Plants make food in their. A roots B stems C flowers D leaves Answer D [This object is a pull tab]

36 Slide 29 / 129 Consumers Living things that find food to eat are called consumers. They need to eat (consume) food.

37 Slide 30 / 129 Consumers Consumers are organized by what they eat. Some consumers only eat plants. Some consumers only eat animals. Some consumers eat both plants and animals. What type of consumer are you?

38 Slide 31 / 129 Herbivores Animals that only eat plants are called herbivores.

39 Slide 32 / 129 Omnivores Animals that eat both plants and animals are called omnivores. Raccoons, warthogs and badgers eat fruit, bugs, and many other foods.

40 Slide 33 / 129 Carnivores Animals that only eat meat from other animals are called carnivores.

41 Slide 34 / Which living thing is not a consumer? A butterfly B fish C tree D dog

42 Slide 34 (Answer) / Which living thing is not a consumer? A butterfly B fish C tree D dog Answer C [This object is a pull tab]

43 Slide 35 / Manatees eat up to 50 kg of plants every day. Manatees are. A herbivores B carnivores C omnivores

44 Slide 35 (Answer) / Manatees eat up to 50 kg of plants every day. Manatees are. A herbivores B carnivores C omnivores Answer A [This object is a pull tab]

45 Slide 36 / Tigers eat a variety of animals, such as deer, boar and water buffalo. Tigers are. A herbivores B carnivores C omnivores

46 Slide 36 (Answer) / Tigers eat a variety of animals, such as deer, boar and water buffalo. Tigers are. A herbivores B carnivores C omnivores Answer B [This object is a pull tab]

47 Slide 37 / Crows can eat berries, insects and worms. Crows are. A herbivores B carnivores C omnivores

48 Slide 37 (Answer) / Crows can eat berries, insects and worms. Crows are. A herbivores B carnivores C omnivores Answer C [This object is a pull tab]

49 Slide 38 / 129 Decomposers Some living things eat dead plants and animals. They are called decomposers. After other organisms die, they break down the remains. These mushrooms are decomposing an old log.

50 Slide 39 / 129 Decomposers Worms, flies, fungi, mold and bacteria are some examples of decomposers.

51 Slide 40 / 129 Decomposers Decomposers are very important! Imagine what the world would look like if all the dead plants and animals were not removed! Click on the picture to see a video of a watermelon decomposing.

52 Slide 41 / 129 Decomposers As decomposers break down the wastes, they turn it into nutrients in the soil. Decomposers create healthy soil. This helps to create healthy plants. Earthworms are known for increasing soil health.

53 Slide 42 / Decomposers eat. A plants B animals C dead plants and animals

54 Slide 42 (Answer) / Decomposers eat. A plants B animals Answer C dead plants and animals C [This object is a pull tab]

55 Slide 43 / Decomposers help to keep the soil healthy. True False

56 Slide 43 (Answer) / Decomposers help to keep the soil healthy. True False Answer True [This object is a pull tab]

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61 Slide 48 / 129 Squirmy Wormy Lab Earthworms are decomposers that live in the soil. What type of soil do they like the best?

62 Slide 49 / 129 Living Things On Land Return to Table of Contents

63 Slide 50 / 129 Living Things On Land An ecosystem is an area where plants and animals live and interact with their environment. Earth is covered with lots of different types of land ecosystems.

64 Slide 51 / 129 Ecosystems and Organisms Each ecosystem has producers, consumers and decomposers. Look at the pictures below. These organisms all live in the forest ecosystem. Label each as a producer, consumer or decomposer.

65 Slide 52 / 129 Producers on Land On land, producers can be plants, trees and shrubs.

66 Slide 53 / 129 Consumers on Land Consumers on land include a variety of animals that are herbivores, carnivores and omnivores.

67 Slide 54 / 129 Decomposers on Land Decomposers on land include worms, bacteria and fungi.

68 Slide 55 / 129 Tropical Rainforest Ecosystem The Tropical Rainforest Ecosystem is a warm, wet climate. It never gets cold enough to freeze. It can rain as much as 2 meters every year!

69 Slide 56 / 129 Tropical Rainforest Ecosystem Can you move the pictures into the correct column to show producers, consumers and decomposers? Organisms Producers Consumers Decomposers

70 Slide 57 / 129 Savanna Ecosystem The Savanna Ecosystem is also a hot climate. It has perio lots of rain, followed by many months of little or no rain. Most of the plants are grasses, with occasional trees.

71 Slide 58 / 129 Savanna Ecosystem Can you move the pictures into the correct column to show producers, consumers and decomposers? Organisms Producers Consumers Decomposers

72 Slide 59 / 129 Desert Ecosystem The Desert Ecosystem is a very dry ecosystem. There is very little rain. The temperatures changes from very hot during the day to cold at night. The desert ecosystem has low diversity.

73 Slide 60 / 129 Desert Ecosystem Can you move the pictures into the correct column to show producers, consumers and decomposers? Organisms Producers Consumers Decomposers

74 Slide 61 / All ecosystems have producers, consumers and decomposers. True False

75 Slide 61 (Answer) / All ecosystems have producers, consumers and decomposers. True False Answer True [This object is a pull tab]

76 Slide 62 / All decomposers are mushrooms. True False

77 Slide 62 (Answer) / All decomposers are mushrooms. True False Answer False. (...but all mushrooms are decomposers) [This object is a pull tab]

78 Slide 63 / A hot, dry ecosystem is the. A ocean B rainforest C desert

79 Slide 63 (Answer) / A hot, dry ecosystem is the. A ocean B rainforest C desert Answer C [This object is a pull tab]

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84 Slide 68 / 129 Living Things In the Water Return to Table of Contents

85 Slide 69 / 129 Earth is Covered in Water The land ecosystems that you learned about cover about 30% of the Earth's surface. If this is true, then how much of the Earth's surface is covered in water?

86 Slide 69 (Answer) / 129 Earth is Covered in Water The land ecosystems that you learned about cover about 30% of the Earth's surface. If this is true, then how much of the Earth's surface is covered in water? Answer 70% [This object is a pull tab]

87 Slide 70 / 129 Earth is Covered in Water About 70% of the Earth is covered in water. This includes all of the bodies of water that you learned about earlier in the year: Rivers Oceans Lakes/ ponds Glaciers Can you name two things about each body of water?

88 Slide 71 / 129 Aquatic Ecosystems Ecosystems that are located in or by the water are called aquatic ecosystems. Every aquatic ecosystem is filled with producers, consumers and decomposers. Can you guess which category each of these organisms fall into? Giant kelp Shark Hagfish

89 Slide 71 (Answer) / 129 Aquatic Ecosystems Ecosystems that are located in or by the water are called aquatic ecosystems. Every aquatic ecosystem is Giant filled kelp with - producers, producer Shark - consumer consumers and decomposers. Hagfish Can - decomposer you guess which category each of these organisms fall into? Answer [This object is a pull tab] Giant kelp Shark Hagfish

90 Slide 72 / Which is not like the others? (Why?) A Pond B Sea C River D Lake

91 Slide 72 (Answer) / Which is not like the others? (Why?) A Pond B Sea C River D Lake Answer B The sea is salt water, the rest are fresh water. [This object is a pull tab]

92 Slide 73 / Most of Earth is covered in land. True False

93 Slide 73 (Answer) / Most of Earth is covered in land. True False Answer False [This object is a pull tab]

94 Slide 74 / 129 Aquatic Producers Producers in aquatic ecosystems include a variety of plants and algae (seaweed). all of these organisms use the sunlight that reaches through the water to make their own food. Seagrass Red algae

95 Slide 75 / 129 Aquatic Plants Aquatic plants live in the water. They have roots, stems and leaves like land plants. Water lilies have roots in the bottom soil and a stem that extends to the surface of the water where the leaves and flowers float.

96 Slide 76 / 129 Algae Algae is also called seaweed. They lack the structures found in true plants. There are many types of algae. This algae is living on rocks in a river. Giant kelp can grow to be 45 meters tall in the ocean! Diatoms are algae that can only be seen with a microcope.

97 Slide 77 / Aquatic plants are different from algae because they have roots, stems and leaves while algae do not. True False

98 Slide 77 (Answer) / Aquatic plants are different from algae because they have roots, stems and leaves while algae do not. True False Answer True [This object is a pull tab]

99 Slide 78 / need sunlight to make food. A Algae B Aquatic plants C Both A and B.

100 Slide 78 (Answer) / need sunlight to make food. A Algae B Aquatic plants C Both A and B. Answer C [This object is a pull tab]

101 Slide 79 / 129 Aquatic Consumers Herbivores, omnivores and carnivores are found in all aquatic ecosystems. What do aquatic herbivores eat? Algae and plants

102 Slide 80 / 129 Aquatic Consumers Aquatic carnivores eat other aquatic animals. Most fish are omnivores - they eat everything they can find.

103 Slide 81 / 129 Aquatic Decomposers Aquatic decomposers include bacteria, fungi, worm, molluscs, and some fish and crustaceans. Lobsters and crabs (crustaceans) Clams (molluscs)

104 Slide 82 / 129 Ocean Ecosystem Can you move the pictures into the correct column to show producers, consumers and decomposers? Organisms Producers Consumers Decomposers

105 Slide 83 / Click the picture to watch a video about sea cucumbers. What type of animal is this? A Producer B Consumer C Decomposer

106 Slide 83 (Answer) / Click the picture to watch a video about sea cucumbers. What type of animal is this? A Producer B Consumer C Decomposer Answer C [This object is a pull tab]

107 Slide 84 / This triggerfish eats sea urchins, small crustraceans and algae. It is a(n). A Herbivore B Omnivore C Carnivore

108 Slide 84 (Answer) / This triggerfish eats sea urchins, small crustraceans and algae. It is a(n). A Herbivore B Omnivore C Carnivore Answer B [This object is a pull tab]

109 Slide 85 / Which is an aquatic carnivore? A Shark B Algae C Sea Cucumber D Tiger

110 Slide 85 (Answer) / Which is an aquatic carnivore? A Shark B Algae C Sea Cucumber Answer A D Tiger [This object is a pull tab]

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115 Slide 90 / 129 Living Things in Ecosystems Activity All ecosystems have producer, consumers and decomposers. How do they affect each other? Find out in this activity!

116 Slide 91 / 129 Ecosystems and Organisms Return to Table of Contents

117 Slide 92 / 129 Ecosystems and Organisms Earth's ecosystems are diverse. Each one has different producers, consumers and decomposers. The organisms that live in each ecosystem have traits that allow them to survive in that specific environment. This cactus lives in the very hot and dry desert ecosystem. To survive in this environment, it stores water in its thick stem.

118 Slide 93 / 129 Ecosystems and Organisms The arctic hare has white fur in the winter to blend in with the snow. In the summer, the hare has brown/grey fur to blend in with the ground. How does this trait help the arctic hare to survive in its ecosystem?

119 Slide 94 / 129 Ecosystems and Organisms Manta rays are large stingrays. They can grow to be 7 meters across! Instead of lungs, manta rays have gills. As water passes over the gills, oxygen is extracted from the water. What would happen to a manta ray if it were placed in a land ecosystem?

120 Slide 95 / 129 Camels Versus Polar Bears Camels live in the desert ecosystem. Camels can go several days without food and water. Their fur helps them to blend into the sand around them. They are able to keep cool in very hot temperatures.

121 Slide 96 / 129 Camels Versus Polar Bears Polar bears live in the tundra ecosystem. Polar bears have two layers of fur and a thick layer of blubber to keep them warm in very cold temperatures. They have long claws to catch food and webbed feet to swim in the water.

122 Slide 97 / 129 Camels Versus Polar Bears Would a camel survive in the arctic? How about a polar bear in the desert? What would happen to them? Discuss with your group.

123 Slide 97 (Answer) / 129 Camels Versus Polar Bears Would a camel survive in the arctic? Camels and polar bears How about would a not polar survive bear in the each desert? What other's would ecosystems. happen to them? Answer Animals Discuss have with your traits group. that help them to survive in their specific environment. [This object is a pull tab]

124 Slide 98 / All organisms can live in any ecosystem. True False

125 Slide 98 (Answer) / All organisms can live in any ecosystem. True False Answer False [This object is a pull tab]

126 Slide 99 / What type of living things are present in all ecosystems? A Producers B Consumers C Decomposers D All of the above.

127 Slide 99 (Answer) / What type of living things are present in all ecosystems? A Producers B Consumers C Decomposers Answer D D All of the above. [This object is a pull tab]

128 Slide 100 / Would cacti and jackrabbits be able to survive in a snowy ecosystem? Yes No

129 Slide 100 (Answer) / Would cacti and jackrabbits be able to survive in a snowy ecosystem? Yes No Answer No [This object is a pull tab]

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134 Slide 105 / 129 Animal Teeth Activity Different animals have different teeth depending on what type of food they eat. What type of teeth do you wish you had?

135 Slide 106 / 129 Biodiversity and Humans Return to Table of Contents

136 Slide 107 / 129 Biodiversity Remember: biodiversity increases the health of an ecosystem. Can you think of an event that would decrease the biodiversity of an ecosystem? Use the pictures as clues.

137 Slide 108 / 129 Biodiversity and Natural Disasters Natural disasters affect the biodiversity of ecosystems by destroying organisms' homes and food sources. Sometimes, organisms themselves are killed. This is the aftermath of a hurricane. How would the local ecosystems have been affected?

138 Slide 109 / 129 Biodiversity and Humans Humans also have an effect on biodiversity. When we conduct activities that destroy ecosystems, we lower the biodiversity of Earth. Oil Spill Air pollution Water pollution Can you think of any other ways that humans affect biodiversity?

139 Slide 110 / 129 Clearing Land Sometimes, people clear an area of all trees in order to build homes or other buildings. Would this increase or decrease the biodiversity of this area? Why?

140 Slide 111 / 129 Clearing Land Suppose that a forest is filled with a lot of different types of trees. Squirrels live in the trees and rely on the trees for food. Hawks also live in this forest and often catch squirrels for food. If humans cleared the forest of all the trees, how would this affect the squirrels and the hawks?

141 Slide 111 (Answer) / 129 Clearing Land Suppose that a forest is filled with a lot of different The squirrels would have no types of trees. Squirrels homes live and in the no trees food so and they rely on the trees for food. Hawks would also move live in somewhere this forest and else often catch squirrels for food. or die. After the squirrels left, the hawks would have no food. They would leave or die as well. The biodiversity would [This object is a pull tab] decrease. Answer If humans cleared the forest of all the trees, how would this affect the squirrels and the hawks?

142 Slide 112 / 129 Hunting Let's think about that same forest. Suppose that a group of hunters came to that forest and hunted all of the hawks. How would this affect the squirrels and trees?

143 Slide 112 (Answer) / 129 Hunting The squirrels would not be Let's think about that hunted same forest. by hawks anymore, Suppose that a group so of they hunters would came increase to that in forest and hunted all of the hawks. numbers. Suddenly there would be A LOT of squirrels How would this affect that the would squirrels destroy and trees? the trees. Then, with no more food or homes, the squirrels would have to leave or die. The biodiversity would decrease. Answer [This object is a pull tab]

144 Slide 113 / 129 Ecosystem Changes Any time one change is made to an ecosystem, it affects all other organisms in that ecosystem! Can you think about what might happen if squirrels were removed from the forest?

145 Slide 114 / 129 Conservation Although humans have caused a lot of biodiversity loss through our actions, we are also able to increase biodiversity. This is called conservation. The Siberian tiger is currently endangered. Conservation efforts are helping to save this animal.

146 Slide 115 / 129 Biodiversity and Conservation In order to increase biodiversity, we first need to recognize how we are affecting the world around us. Next, we need to think creatively about solutions. Although humans have destroyed this habitat, what are some things we could do to improve it?

147 Slide 116 / 129 Cities Cities are large areas where habitats have been removed to build structures for humans. Cities cause a loss in biodiversity. Can you think of any solutions that would help to fix this problem?

148 Slide 117 / 129 Roof Gardens Some buildings have roof gardens that create new habitats for organisms. How do roof gardens affect biodiversity?

149 Slide 118 / 129 Wildlife Corridors When humans build roads, they divide ecosystems in half. This can cause a loss in biodiversity. Can you think of a solution to this problem?

150 Slide 119 / 129 Wildlife Corridors Many countries have built wildlife corridors. These are passages that travel over or under highways. This allows animals to cross from one side of an ecosystem to another without harm. How do these help to preserve biodiversity? Click the picture to see wildlife corridors from around the world.

151 Slide 120 / 129 Biodiversity and Conservation Click below to watch a video about biodiversity and conservation.

152 Slide 121 / Many human activities affect biodiversity. True False

153 Slide 121 (Answer) / Many human activities affect biodiversity. True False Answer True [This object is a pull tab]

154 Slide 122 / When one part of an ecosystem is changed, how many other parts are affected? A Just the producers. B Just the consumers. C Nothing else is affected. D All parts are affected.

155 Slide 122 (Answer) / When one part of an ecosystem is changed, how many other parts are affected? A Just the producers. Answer B Just the consumers. C Nothing else is affected. D All parts are affected. D [This object is a pull tab]

156 Slide 123 / Which of the following would increase biodiversity? A Hurricane B Roof garden C Clearing Land D Building highways

157 Slide 123 (Answer) / Which of the following would increase biodiversity? A Hurricane B Roof garden C Clearing Land Answer B D Building highways [This object is a pull tab]

158 Slide 124 / After biodiversity is lost, there is nothing that can be done to increase it again. True False

159 Slide 124 (Answer) / After biodiversity is lost, there is nothing that can be done to increase it again. True False Answer False [This object is a pull tab]

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