Answer:
Mitochondria
Explanation:
Its the powerhouse of the cell
Answer:
Bipedal posture allowed arms to be free to develop and use tools.
Explanation:
This dispersal reduces the likelihood that a sperm will find an egg. Many sperm and eggs die before achieving fertilization. The low success rate of external fertilization puts animals at a reproductive disadvantage compared to internal fertilization.
Answer:
Chemical families on the periodic table are the following:
1) Alkali metals.
2) Alkaline earth metals.
3) Transition metals.
4) Halogens.
5) Noble gases
Explanation:
Alkali metals are those elements having one electron in the outermost shell. Alkaline earth metals are found in the earth such as calcium. Halogens means salt forming, it produces salts when combine with alkali. Noble gases are those which are non-reactive in nature.
