Answer:
Because the earth's axis is tilted. It is all about the tilt of the Earth axis.
Explanation:
Answer:
The three parts of the cell theory are: cells are the smallest unit of life; all cells come from preexisting cells; and living thing is made up of one or more cell.
No, the vast majority of DNA mutations are not physically noticeable, and those that are noticeable physically are mainly cosmetic differences, such as a change in hair color, or heterochromia.
Answer:
http://mairscience.weebly.com/uploads/5/7/8/8/57880837/8th_grade_key_2015_sol_released_test.pdf
Explanation:
The x chromosomes are female chromosomes. We all start off as a female in the womb. Slowly through time, thr y chromosome jump in to make them a male and develop genes that woman do not have. For example, their beard gene is not necessary for example.