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WorksheetsWhy do you have to clean a fish tank but not a pond?
Total questions: 11
Worksheet time: 6mins
Producers...
use carbon dioxide and release oxygen.
include plants, algae, and phytoplankton.
make their own food, rather than eating other living things.
all of the above
Decomposers...
break down waste and dead material into nutrients for plants.
are all microscopic (can only be seen under a microscope).
create nutrients out of the air that help plants grow.
break down waste and dead material into nutrients for plants.
What is taken in by plants, consumed by animals, and then released by decomposers?
oxygen
helium
carbon
Living things in a pond all have a role to play. They are part of a system called
an environment
an ecosystem
a diversity system
If a pond has a lot of decomposers, what else will it need?
fish
consumers
producers
Why would it be helpful to have plants in a pond? Plants will...
release oxygen in the water.
make more carbon dioxide for the fish.
filter the water and make it cleaner for the fish.
When the stuff at the bottom of the pond is broken down, what happens?
There will be too much carbon dioxide and the fish can’t breath
Micronutrients are released into the pond.
The water will become too dirty and the fish will be sick.
The bottom of a pond is usually covered with
pond sludge
pond mud
pond muck
Plants take in carbon dioxide, but decomposers and ____________ release carbon dioxide.
consumers
producers
fish
A(n) ______________________ includes all the producers, consumers, and decomposers in an environment.
environment
fish tank
ecosystem
Why do you have to clean a fish tank but not a pond?
a fish tank doesn't have consumers or animals like a pond does.
a fish tank doesn't have decomposers or plants like a pond does.
a fish tank has a filter and a pond does not.
