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Food chain in Sea

Food chain in Sea. Human often make changes in food chains. Then they find that one change causes other changes. That was what happened when hunters killed nearly all the Pacific sea otters. 1- What is the main idea of this text?. 2- How can human make changes in the food chain? .

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Food chain in Sea

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  1. Food chain in Sea

  2. Human often make changes in food chains. Then they find that one change causes other changes. That was what happened when hunters killed nearly all the Pacific sea otters.

  3. 1- What is the main idea of this text? 2- How can human make changes in the food chain? 3- Underlined the past tense in this paragraph? was is happened happen killed kill

  4. What is the past tense of “ find” ? found What part of speech “ hunter” is? Hunt ( verb) + er ( suffix) = hunter (noun) What is the meaning of “ hunter”? Someone who hunt animal.

  5. The otters lived off the west coast of North America. They lived in beds of giant seaweed, called Kelp. Every year thousands of otters were killed for their fur. By the early 1900s almost none were left. But as the otters disappeared, so did beds of kelp. And so did eagles, harbor seals, and fish . What had happened? The answer lay in the kelp.

  6. Giant seaweed ( kelp)

  7. Otter

  8. Why are otters killed ? They are killed for their fur. What would happen if all otters were killed?

  9. Harbor seal Eagle Can you find a food chain in this paragraph? Fish Kelp

  10. Make a question The otters lived off the course of North America. Where did the otters live? what is the past of “ Lay”? Laid what is the present of “ left”? Leave

  11. Give a word which means “ very big” Giant What does the word” disappear mean? A- Not seen B- Not found C- Not start

  12. Kelp is a green plant at starts of many food chains. It is eaten by tiny animals that are eaten by bigger animals that are eaten by fish. The fish are food for eagles and seals, as well as people.

  13. Kelp is also eaten by spiny animals called sea urchins. In eating, they may cut off stems at the seafloor. The kelp then floats away.

  14. “Tiny” means? A- very big B- very small

  15. Can you find a food chain

  16. Sea urchins are one of the foods otters like best. But when hunter killed the otters, there was no one to eat the urchins. The urchins destroyed the kelp beds.

  17. Once the hunting stopped, the otters made a comeback. They ate sea urchins, and the kelp began to do well. When the kelp did well, the fish came back and so did the eagles, seals and fisherman.

  18. What does the sentence mean? The otters made a come back

  19. 3-Making ConnectionsWork With a partner. Complete the chart below.

  20. Eagle Man Shark Whale Lion Fox grass Green plants Kelp Sea weed Sea urchins fish Sheep cow Seal Snake tiger Big fish

  21. 4. Expanding Your Vocabularyfood chains in the ocean are hard to study because the plants and animals live underwater. Match the words and phrases with each item in the picture.

  22. a 1- ………..kelp 2-- ….e…… mackerel 3-- ………….octopus 4- -…………. Killer whale 5- ………..red algae 6- - …………..krill k c i j

  23. l 7- …………….squid 8- ……………..tuna 9-…..h ………anchovy 10-……………seal 11- ……g …..sea lion 12-……f …..herring d b

  24. Sea otters Sea Urchins Kelp

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