Brazil nuts have a tough shell that few birds can crack. Which feature of the macaw's beak, shown above, is most likely different from other birds that eat nuts?

A safflower is a plant with a small seed that has a thick shell. Birds need to crack open the shell to eat the seed. Which type of beak would be best suited to eating safflower seeds?

Water lilies live in lakes and ponds. The lilies have very long stems. The picture above shows a water lily in a pond. How do long stems help water lilies live in ponds?

Rivers are home to many kinds of birds. Which foot is most likely the adaptation of a bird that swims in water to find food?

Plants that live in slat marshes absorb a lot of salt water. What adaptation do these plants most likely have?

Sea otters live in large kelp beds in the open ocean. Otters have very streamlined bodies. What does a streamlined body help an otter do?

What type of adaptation include teeth, beaks, claws, and body coverings?

How are behavioral adaptation like structural adaptations?

A cactus has spines to protect itself. What type of adaptation is this?

Migration and hibernation, are called —

Individuals of the same kind living in the same environment make up a

All the populations of organisms living together in an environment make up a

A community and its physical environment make up an

All life in an ecosystem depends on producers to capture energy from the —

These use water, air, and sunlight to make their own food and food energy.

Animals that get their energy from producers or from organisms that eat producers and cannot make their own food are —

Plants and animals that break down the bodies of dead plants and animals and help the food energy inside the dead bodies get back into the soil, the water, and the air.

The main source of energy for a food chain is the —

Every population has a place where it lives and finds food in an ecosystem. It is called a

An animal's niche is its —

A habitat must provide which of the follow? Select all the correct answers.

Which animal lives in both water and land environments during its life cycle?

A caterpillar would need to live in an area with an abundance of leaves. Once it became a butterfly, it would —

What are the living and nonliving things in an environment or area?

An organism that can make its own food

Breaks down and feeds on the remains of other organisms

Small consumers that are hunted and eaten by larger consumers

Interacting food chains found in an ecosystem

An animal that hunts and eats other animals for energy

These organisms cannot make their own food; they must eat something for energy

NON-living things found in an ecosystem

LIVING things in an ecosystem