Which of the following is an example of a natural source of air pollution?
a. burning coal and natural gas releases carbon dioxide.
b. plowing and harvesting crops releases dust particles.
c. blowing wind creates dust storms that release particles.
d. mining releases gases trapped beneath earth's surface.

What are the types of genetic recombination

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic