An abiotic factor is _____________________.

David created a shoe box model of a grassland. He placed biotic factors in first but needs to add some abiotic factors. Which two abiotic factors could he add?

If a forest model contains trees, grass, deer, and rocks, which item in the model would be an abiotic factor?

Danny decides to build an aquarium to put in his home. He adds rocks, water, Java moss, an earthworm, and two goldfish to the aquarium.

Suppose Danny removes the fish from the aquarium. What is the best prediction for what will happen to the other organisms?

Susan wants to make a food chain model for a project. Choose the correct answer that puts the food chain in order from producers to consumers.

The model that shows how matter and energy flows from one organism to another is a ___________________.

Daniel decides to build an aquarium to put in his home. He adds rocks, water, plants, an earthworm, and two goldfish to the aquarium.

What role does the plants play in the ecosystem of the aquarium?

Joey created this model of a food web.

Which two organisms do not consume other organisms?

Organisms that eat other animals and plants are ________________.

Organisms that use energy from the sun, are consumed by other organisms, and usually are at the start of a food chain are ___________________________.

Organisms in the image are ______________________.

Beth made this model of a forest ecosystem for science class. Her teacher suggests she add some rabbits to her model.

How would the addition of rabbits affect Beth’s forest ecosystem?

A forest fire burned down the forest ecosystem. Which organisms come back first?

Check three boxes that would create a healthy ecosystem.

This model shows the carbon cycle because it shows an animal releasing carbon dioxide gas into the air as it breathes, plants absorbing the carbon dioxide in the air to make food, and the animal consuming a plant, where the carbon cycle continues anew.

What would make this model of an ecosystem complete?

There are plants, decomposers, rabbits and wolves in an ecosystem. What might happen if the population of wolves in the ecosystem increased?

What would happen if the producers were removed from this food chain?

Which statement best describes the similarities of the carbon cycle and a food web?

According to the image many of the same organism in a group living together would represent ___________________.

This image is an example of what?