Science

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1.
1 point
One of Earth's large ecosystems, with its own kind of climate, soil, plants and animals.
2.
1 point
The continuous exchange of carbon dioxide and oxygen among living things.
3.
1 point
The overlapping food chains in an ecosystem.
4.
1 point
The slow changing of a liquid into a gas.
5.
1 point
The continuous trapping of nitrogen gas into compounds in the soil and its return to the air.
6.
1 point
A meat-eating animal that feeds on the remains of dead animals.
7.
1 point
Precipitation that seeps into the ground and is stored in tiny holes, or pores, in soil and rocks.
8.
1 point
An animal that hunts other animals for food.
9.
1 point
An animal that eats both plants and animals.
10.
1 point
An animal that hunts other animals for food.
11.
1 point
The changing of a gas into a liquid.
12.
1 point
An animal that eats another animal.
13.
1 point
An animal that eats plants, algae, and other producer.
14.
1 point
The continuous movement of water between Earth's surface and the air, changing from liquid to gas to liquid.
15.
1 point
A substance used to add minerals to the soil.
16.
1 point
The path of the energy in food from one organism to another.
17.
1 point
Material not yet refined, manufactured, or processed.
18.
1 point
A resource that can be replaced in a short period of time.
19.
1 point
A resource that cannot be replaced within a short period of time or at all.
20.
1 point
Any form of water particles that falls from the atmosphere and reaches the ground.