Answer:
Parasitism
Explanation:
The kind of relationship in which one organism benefits to the detriment of the other is called parasitism. The parasites feeds on the other organism and it derives nourishment and nutrient from it. The host or the other organism suffers and does not benefit from the relationship. This relationship can lead to the eventual death of the host organism. Example is tapeworm and man.
A. Carbon
Explanation:
because during photosynthesis, the cells use carbon dioxide and the light from the sun and that makes sugar molecules.
Because pioneer species are the first to return after a disturbance, they are the first stage of succession, and their presence increases the diversity in a region. They are usually a hardy plant, algae or moss that can withstand a hostile environment.
Answer:
Due to continuous global warming, the oceans tend to gain more heat and hence the temperature rises. In the current century, the heated conditions of the oceans can be threatful for the human population. Also, the increase in the sea levels will have serious consequences on the health of mankind and their quality of life.