Interactions
Energy
Changes
Past Environments
100

A specific area with all the living and nonliving things that interact within it.

What is an ecosystem?

100

Which way does the arrow go?

 sea urchin                sea otter

What is from left to right?

100

Some activities of humans affect the processes of an ecosystem and most changes are likely to be _______ to the ecosystems

What is damaging What is detrimental?

100

Scientists may learn what an animal ate by looking at the shapes of this fossil item. 

What are teeth?

200

All the living and nonliving things that surround and affect an organism

What is an environment?

200

An organism that make its own food

What is a producer?

200

You can help maintain the world's supply of natural resources by

What is reduce,reuse,and recycling?

200

Scientists compare animal fossils to similar animals that are alive today. For example the elephant and the mammoth both have these.

What are tusks?

300

This maps many food chains together

What is a food web?

300

An organism that cannot make its own food

What is a consumer?

300

Direct harvesting of organisms can lead to the ______ of a species.

What is extinction?

300

If two fossils are found in the same rock, scientists can infer that these two things did this.

What is lived at the same time?

400

Three non-living things that producers need to do photosynthesis.

What is air, sunlight, and water?

400

What is an organism that breaks down waste and remains to obtain nutrients

What is a decomposer?

400

How would an ecosystem change if the fish that were the MAIN food source for dolphins became sick and died?

What is the number of dolphins would decrease.

400

Animal fossils are more common than plant fossils because plants have this.

What are softer body parts?

500

A fish takes cover in the coral to avoid being eaten

What is interacting with the nonliving components of an ecosystem?

500

 An example of non-living thing in that produces energy

What is the sun?

500

If the number of sea otters increased in an ecosystem, what would happen to the number of sea urchins?

What is the number of sea urchins decreasing?

500

Palm trees were found fossilized under a sea

What used to be land is now an ocean?

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