Ecosystems

What are the basic needs every living thing needs to survive?

• food and water

• clothes, oxygen, warmth

• food, water, air, shelter

• all a living thing needs is oxygen

What does every food chain start with?

• producers

• consumers

• small animals

• prey

Bears eat both meat and plants. They are considered which type of consumer?

• omivore

• herbivore

• decomposer

• carnivore

In a predator-prey relationship, when the prey population decreases the predator population would probably:

• increase

• decrease

• stay the same

• become extinct

All of the white-tailed deer in a forest make up:

• an ecosystem

• a population

• a community

• a food chain

There are very few rhinos in the world. Rhinos are:

• producers

• extinct

• carnivores

• endangered

A population of mice live in a barn community. What will happen if a cat population joins the community?

• the cat and mouse population both increase

• the populations stay the same

• the mouse population increase while the cat population decreases

• the mouse population decrease while the cat population increases

Horses' teeth are adapted for which activity?

• eating meat

• chewing grass

• eating both meat and plants

• cracking open seeds

A mouse is an example of a:

• prey

• producer

• carnivore

• predator

Which of the following is an example of an abiotic factor affecting an ecosystem?

• disease

• lack of food

• cold temperatures

• a new animal