2. What does the author mainly describe in the text?
A. how natural selection changed the population of peppered moths
B. how the Industrial Revolution improved the lives of workers
C. how Charles Darwin devised his theory of natural selection
D. how humans influence organisms via artificial selection
3. What conclusion can be drawn from the change in population of light gray peppered

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an