Answer:
Within a population, each individual mutation is extremely rare when it first occurs; often there is just one copy of it in the gene pool of an entire species. But huge numbers of mutations may occur every generation in the species as a whole.
Works Cited:
Oct 29, 2007
Https://www.scientificamerican.com
Explanation:
Hope this helps!
Answer: Over thousands of years, the water filled one basin and then spilled over into the next, like a series of bathtubs overflowing.
Explanation:
D is probably right cos you are comparing data
Quantitative data
Qualitative data does not use numbers, but names and labels
Answer:
the northern hemisphere is in summer and the southern hemisphere is in winter
Explanation:
the northern hemisphere is tilted toward the sun and the southern hemisphere is tilted away
