Answer: A
Evolution is the idea that species change over time, and natural selection is a mechanism by which evolution takes place.
Homozygous means having identical piars of genes for any given pair of heredity characteristics.
heterozygous means an individual having two different alleles for a specific trait.
The state of maintaining a stable internal environment regardless of changing external conditions is called 
.
Answer:
sperm cells only a few hundred are able to traverse the long way through the cervix, the uterus, and past the fallopian tube isthmus to the tube's ampullary region to there meet oocyte.
Explanation:
Answer:
True.
Explanation:
The water cycle does not exclusively need life to function. The water cycle consists of 3 steps in any given order:
1. Water falls to the surface.
2. Water evaporates from the surface.
3. Water condenses into clouds in the atmosphere.
