Answer:
They affect chemical reactions by lowering the activation energy, thus speeding up the reactions.
Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells
Explanation:
Inhaling through the nose
Answer:
He used peas because they are self pollinating,they grow fast,and they have many traits
Answer:
The left side of the brain is responsible for controlling the right side of the body. It also performs tasks that have to do with logic, such as in science and mathematics.
Explanation:
Basically controls the opposite side of your brain and used for brain intensive tasks.
