REINFORCEMENT EXAM 5 (4th grade)
What happens when rocks are broken down over time? a) They mix with organic materials b) They turn into magma immediately c) They disappear completely d) They change directly into water
a) They mix with organic materials
Why is some soil darker than others? a) Because it has more rocks b) Because it has more sand c) Because it contains more humus d) Because it is older
c) Because it contains more humus
Which factor influences the rate of weathering and the formation of humus? a) Parent rock b) Time c) Climate, temperature, and rainfall d) Topography
c) Climate, temperature, and rainfall