Ecosystems

How does a bird get energy from the sun?

• The bird absorbs energy directly from the sun.

• The bird eats caterpillars that ate milkweed that got energy from the sun.

• The bird drinks water warmed by the sun.

• The bird flies in the air that is warmed by the sun.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A farmer builds a pond. Many worms begin to live near the pond. How is the bird population that eats worms affected by the increase in worms?

• The bird population increases.

• The bird population decreases.

• The bird population is not affected.

• There is no way to predict the affect.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which are all biotic factors in an ecosystem?

• living plants and animals, and soil

• living and dead plants and animals

• water, soil, temperature, and dead animals

• plants, animals, water, temperature, and soil

Tags

NGSS.MS-LS2-4

What are all abiotic factors of an ecosystem?

• living plants and animals

• dead plants and animals, soil and water

• soil, water, temperature, gases

• plants, shelter, sunlight

Tags

NGSS.MS-LS2-3

Which feeding relationship best describes a connection between a river and a mountain ecosystem?

• a bird eats insects

• a snake warms itself under a rock

• a black bear eats salmon

• a salmon eats a water worm

Answer explanation

The bear lives in the mountain ecosystem and eats the salmon that lives in the river.

Tags

NGSS.MS-LS2-3

Which statement describes the difference between phytoplankton and zooplankton?

• Zooplankton are plants such as krill, and phytoplankton are animals such as algae.

• Phytoplankton are plants such as krill and zooplankton are animals such as diatoms and algae.

• Phytoplankton are animals such as algae and diatoms and zooplankton are animals such as larvae.

• Phytoplankton are plants such as algae and diatoms and zooplankton are animals such as larvae and krill.

Which is an example of parasitism?

• A tick on a giraffe.

• An oxpecker eating bugs from an elephant's back.

• Baboons warning elephants of a predator as elephants dig for water.

Tags

NGSS.MS-LS2-4

Which is an example of mutualism?

• A tick on a giraffe.

• Oxpeckers eating insects off of an elephant's back.

• Baboons warning elephants of a predator as elephants dig for water.

Tags

NGSS.MS-LS2-2

Which is an example of commensalism?

• Ticks on a giraffe.

• Oxpeckers eating insects from an elephant's back.

• Baboons warning elephants of a predator as elephants dig for water.

________ factors are non-living parts of an ecosystem.

• Abiotic

• Community

• Biotic

• Organism