The top layer of soil is called ______.

top soil

sub soil

bedrock

2. The amount of water soil can hold is its ______

top soil

water capacity

bedrock

weathering

3. When a rock gets broken down into soil, this process is called ______.

top soil

water capacity

erosion

weathering

4. Which layer of soil has the most humus?

top soil

sub soil

bedrock

5. The decayed remains of plants and animals is called ______.

soil

sub soil

humus

weathering

6. Choose the best answer to the definition: Dead plant on the forest floor can be called...

plant remains

decompose

weathering

trees

7. Which of the following types of soil has the largest particles?

clay

silt

humus

sand

8. What is Humus made up of?

decompose

decayed soil

decayed plant and animal parts

9. Which type of soil can hold the greatest amount of water?

loam

clay

sand

silt

10. This type of soil is sticky when wet and hard when dry.

loam

clay

sand

silt

11. Water found in lakes is 

salty

marine

fresh

wasted

12. The largest body of water 

sea

ocean

lakes

pond

13. People build dams to collect the __________

ocean water

salt water

rain water

14. Which water source flows through land and meets the ocean?

ocean

pond

lake

river

15. Which water source covers most of the Earth?

ocean

pond

lake

river​