Which of the following statements about energy resource availability is true?
a.
nonrenewable energy sources will be completely used within 10 years.
b.
nonrenewable energy sources are readily available in all countries.
c.
the exact amount of nonrenewable energy resources is not currently known.
d.
all of the above are true.

One gene can influence trait(s). one trait can be determined by gene(s).

If a checkpoint detects damaged dna, the checkpoint may

Atree root breaking a rock into smaller fragments is an example of both and mechanical weathering. when rocks are exposed to heat, they which can contribute to thermal stress. when harmful gases, such as sulfur dioxide and nitrogen oxide, react with water in the atmosphere, they can produce the agent of erosion involved in stream erosion is when the ground is so saturated that it can't absorb rainfall or when rain falls so quickly that the ground can't absorb the water, forms. a/an is a huge, heavy, moving body of ice that picks up rocks and sand and erodes the ground beneath it as these materials scrape across it. hot arid climates are prone to erosion by rows of trees and shrubs planted to protect fields from wind erosion are known as