Plants can not use the nitrogen as it is and rely on ____ to get it into a usable form.

• photosynthesis

• nitrogen fixing bacteria

• cellular respiration

• nitrogen cells

Which is not an example of a decomposer.

• mushrooms

• bacteria

• worms

• grass

How much energy passes from one trophic level to the next?

• all of it

• none of it

• 25%

• 10%

Most of the energy is lost moving from one trophic level to the next. What is NOT a way that energy is lost?

• lost as heat

• used for movement

• used for cellular metabolism

• used to store food in the body

Which way does energy move in an ecosystem?

• from producer to consumer

• from consumer to producer

• from decomposer to producer

• from producer to the sun

Which kind of animal is at the top of the food chain?

• producer

• herbivore

• carnivore

• heterotroph

What is the source of energy for autotrophs

• food it eats

• the sun

• energy in the soil

• water

What might you expect to see if excessive nitrogen-containing fertilizer ends up in a pond or river?

• Increased biodiversity

• Increased health of all the plants in the ecosystem

• Fish growing larger than usual

• Algae bloom disrupting the ecosystem

The diagram above represents relationships in an

ecosystem. What is the primary source of energy in

this environment?

• cellular respiration in the plants

• energy from minerals in the soil

• fossil fuels

• solar energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the process that picks up and moves weathered rocks?

• deposition
• landslide
• weathering
• erosion

Tags

NGSS.MS-ESS2-2