Mystery Science: Ecosystem & Matter Cycle

Doug noticed his fish were looking sick. What did the pet store say he forgot and needed?

• chemicals

• filter

• food

• water without chlorine

If you don't have a filter for a fish tank, what builds up in the tank and becomes unhealthy for the fish?

• food

• waste

• poison

Tags

NGSS.MS-LS2-4

What is it called when there is a mixture of waste and dead animal material at the bottom of the pond?

• pond muck

• pond scum

• waste management

• waste muck

What are fungi's and bacteria's function in pond muck?

• composers

• decomposers

• carnivores

Tags

NGSS.MS-LS2-3

What do decomposers release into the pond?

• micronutrients

• waste

• fungi

Tags

NGSS.MS-LS2-3

Why can too many decomposers be a bad thing for fish?

• The decomposers will attack the fish.

• Decomposers need oxygen and can release too much carbon dioxide.

• You can never have too many decomposers.

Tags

NGSS.MS-LS2-3

What in the pond helps control the amount of carbon dioxide? (Hint: they are producers)

Tags

NGSS.MS-LS1-6

What do plants release into the water?

• oxygen

• carbon dioxide

• chlorine

• fish food

Tags

NGSS.MS-LS1-6

What is the microscopic plant life that drifts around in the water?

• algae

• fish

• phytoplankton

• bacteria

Algae, plants, and phytoplankton are all ___________ and take in carbon dioxide and produce oxygen.

• consumers

• producers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3