Answer:
The importance of natural forest ecosystems to human well-being can not be overstated. Forests provide raw materials for food, fuel, and shelter. In forests, ecosystem components such as micro-organisms, soils, and vegetative cover inter-act to purify air and water, regulate the climate and recycle nutrients and wastes. Without these and many other ecosystem goods and services, life, as we know, would not be possible.
Explanation:
Answer:
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.
The answer is A because it is the best answer that the students gave.
The right answer is Nutrition
This answer can not be digestion nor absorption because it is a term that concerns multicellular beings.
Digestion is a mode of mechanical and chemical transformation of food nutrients assimilable or not by the body. By definition, digestion is a process present in all heterotrophic organisms. This digestion is carried out in a digestive system that can correspond to a simple digestive vacuole of a eubacterium, or specialize as is the case of mammals ruminants (cow, etc.). Digestion can also be defined as the molecular simplification that is to say the transformation of macromolecules (large molecules) into micromolecules.
Nutrition is therefore the most adequate answer.
By cellular nutrition is therefore meant the provision of the nutrients necessary for the proper functioning of each human cell. It is therefore to give the cells all the micronutrients at higher or optimal doses, that is to say in amounts beneficial to health. In other words, it is essential that our dietary supplementation be balanced and complete, as is a healthy diet.
