What soil-forming factor includes moisture conditions impact on soil?
A. geologic
B. climate
C. topographic
D. biological
E. time
Question 2What soil-forming factor influences the chemical, textural, and structural character of soil?
A. geologic
B. climate
C. topographic
D. biological
E. time
Question 3What is NOT part of the mixture known as soil?
A. weathered minerals
B. living organisms
C. air and gases
D. liquid solutions
E. solid bedrock
Question 4What almost always represents the surface of the lithosphere?
A. regolith
B. bedrock
C. soil
D. crust
E. pedogenesis
Question 5In contrast to Earths past mass extinctions, what is the cause of current extinctions?
A. decreased insolation
B. human activity
C. tectonic shifts
D. climate change
E. species competition
Question 6What makes a species invasive?
A. It dies out quickly in a new habitat.
B. It is found in a large total area.
C. It is not native to the area.
D. It exhibits special adaptations.
E. It outcompetes native species in the area.
Question 7What is NOT one of the negative impacts of the destruction of the tropical rainforest?
A. damage of habitat
B. growth in farmland
C. loss of biodiversity
D. rapid soil erosion
E. decline in soil fertility
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