In each ventricle is a blood vessel network called the choroid plexuses that produces cerebrospinal fluid. This blood vessel consists of ependymal cells
Answer:
C.
Zebras depend on soil to grow grass, which the zebras eat.
give brainliest plz
That the same animal was there and moves place to place or someone traveled with it.<span />
Answer:
What are so called breast-cancer genes, are mutations in two genes: BRCA1 (BReast CAncer gene one) and BRCA2 (BReast CAncer gene two), and are also associated with ovaric cancer. According to the question, these genes are present in the popolation despite surgeries and deaths, and asks why. Surgeries does not eliminate the genes, they eliminate the tumors, and people can still reproduce after that. And also, most people already had offspring before they know they have cancer, so they are inheriting the mutations on the genes anyway.
Explanation:
