Living and Non Living Ecosystems

Many animals in an ecosystem depend on other animals for —

• shelter

• water and air

• energy

• support

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Many birds, such as Eagles and hawks, have sharp claws, called talons, on their feet. Sharp talons help these birds interact with which part of its environment?

• diseases that make them sick

• the species they catch and eat

• provides other spieces for company

• the oxygen carbon dioxide gas exchange

• water they drink from streams

Plants are interacting directly with another living component of their environment when they are–

• attracting insects.

• absorbing sunlight.

• soaking up water.

• taking in carbon dioxide.

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Many plants depend on insects for pollination. Without pollination, these plants cannot produce seeds. Plants depend on insects to —

• grow new leaves

• strengthen roots

• make more food

• produce offspring

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Frogs in a pond interact with both living and nonliving components in their ecosystem. Frogs interact with nonliving components when they–

• eat swimming insects for energy.

• lay their eggs in bodies of water.

• become food for another animal.

• hide beneath plants in the pond.

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NGSS.MS-LS2-1

All of the following are examples of living things interacting with each other EXCEPT —

• birds preying on insects living in the grass

• squirrels spreading the seeds of trees by burying them

• fish eating plants and other smaller fish

• frogs sleeping in the mud at the bottom of the pond

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Pacman frogs live in South America. Some of their traits are listed here. What habitat change might be harmful for a Pacman frog?

• Heavy rains in the afternoons over a period of days

• An increase in population of several kinds of birds

• A change in weather, leading to cooler temperatures

• The introduction of a new species that eats rodents

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NGSS.MS-LS2-4

Plants interact with living and nonliving components in their environment. Which is an interaction with a nonliving component?

• Small insects eating the stems of plants

• Humans breathing oxygen released by plants

• Sandy soil holding the roots of plants

• Bees gathering pollen from flowers of plants

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Which adaptation of a cactus is related to its interactions with living organisms in its environment?

• roots that grow deep underground to reach water

• spines to protect it from animals that want its water

• a waxy, outer coating to prevent the loss of the water

• large, expendable stem that allows it to store water

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Which of the following is a question that could be asked in a scientific investigation of how organisms depend on their environment?

• What is the effect of rainfall on the growth of grasses?

• How does temperature affect the formation of soil?

• What time of day produces the most precipitation?

• How fast does water erode different types of rock?

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NGSS.MS-LS1-5

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