How does the muscular system depend on the nervous system?

The nervous system sends signals to the muscles to cause movement.

Which is a benefit of having different types of producers in an ecosystem?

The ecosystem can support more types of consumers.

Which statement most accurately describes a pond ecosystem?

Cattail and pond lily grow in a pond.

Why is the digestive system important?

It provides nutrients that cells need to produce energy.

Which best describes the purpose of the cardiovascular system?

It supplies oxygen to the body.

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Ecosystems and Human Body Systems Review

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Answers

1
How does the muscular system depend on the nervous system?
The nervous system sends signals to the muscles to cause movement.
The nervous system transports blood to the muscles.
The nervous system provides support for the muscles.
The nervous system supplies food and oxygen to the muscles.
2
Which marine ecosystem would be best for organisms that can adapt to both salt water and fresh water?
river
pond
lake
estuary
3
Which would be most directly affected by a reduction in nutrients in the soil?
abiotic factors
sunlight
plant community
wetlands
4
Which is a benefit of having different types of producers in an ecosystem?
There is more competition for food by consumers.
The ecosystem will be better able to support carnivores.
There will be more decomposers living in the ecosystem.
The ecosystem can support more types of consumers.
5
Which statement most accurately describes a pond ecosystem?
Coral reefs grow in a pond.
Grasses and wildflowers grow in pond.
Evergreen trees grow in a pond.
Cattail and pond lily grow in a pond.
6
Which terrestrial ecosystem has warm, humid conditions and a large variety of plants and animals?
deciduous forest
estuary
tropical rainforest
grassland
7
Where do decomposers work the fastest to recycle organic material?
in the tundra
in the mountains
in the rainforest
in the desert
8
Why is the digestive system important?
It carries dioxide and oxygen away from the body.
It provides oxygen that cells need.
It transports blood that cells need.
It provides nutrients that cells need to produce energy.
9
Which best describes the purpose of the cardiovascular system?
It delivers food to power the body.
It delivers blood to the body's tissues.
It supplies oxygen to the body.
It supplies stability to the skeleton.
10
Which organism is a producer?
sunflower
ladybug
spider
deer
11
Which would be most beneficial to a snail in an aquarium ecosystem?
large rocks
green algae
small fish
aquatic insects
12
How do decomposers recycle dead trees?
by making them food for consumers
by turning them into soil
by releasing oxygen
by turning them into producers

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