Water molecules are polar. This means that one end of the molecule is positively charged, while the other is negatively charged. Opposite charges attract. Water molecules on the faucet that are eventually pulled away from the others by gravity will themselves pull together and form round drops because the charged portions of molecule attract the oppositely charged portions of another.
Answer:
A. oxygen
Explanation:
element in magma is most abundant is oxygen.
In biology, the inner lining of tubular structures is called a lumen.
This can refer to numerous tubular structures in the body, such as the lumen of the veins and arteries, the lumen of the intestines or the tubes in the kidneys.
This term can also be used to describe a space defined by membranes of cell organelles such as the lumen of the mitochondria, the Golgi apparatus, and others.
THe bacteria that lives in the nodules of legumes are the only ones able to fix nitrogen gas into ammonia, which is later fixed by other bacteria in the soil to nitrites and nitrates that the plants can use.
some bacteria also performs denitrification, which converts ammonia back to nitrogen gas, allowing the cycle to continue
