Answer:
Why are embryos used in medical research?
Stem cells can be obtained at the early stages of embryo development; these cells are called human embryonic stem cells (hESC). They also could be used in research to develop drugs to treat serious diseases, or to repair organs following a stroke or heart attack.
Answer:
cause its the control center
Explanation:
The answer is B. Meiosis involves two cycle of cell division.
Hormones- Person's sex hormones as held to influence behavior or mood.<span />
The answer is A. The heart pumps blood through the circulatory system, and the lungs help the oxygen transport throughout the respiratory system. :)