Hint: Hibernation is a condition of insignificant movement and metabolic misery in endotherms. Hibernation is an occasional heterothermy portrayed by low internal heat level, slow breathing and pulse, and low metabolic rate. It most usually happens during cold weather months.
Although customarily held for "profound" hibernators, for example, rodents, the term has been reclassified to incorporate creatures, for example, bears and is currently applied dependent on dynamic metabolic concealment as opposed to any total decrease in internal heat level. Numerous specialists accept that the cycles of day by day slowness and hibernation structure a continuum and use comparable mechanisms. The equal throughout the late spring months is aestivation.
Mutualism is most usually characterized such that mirrors the positive signs portraying the result of their connections, that is, as communications between people of various species that advantage the two of them. Notwithstanding, mutualism can be all the more correctly characterized as an association between people of various species that outcomes in certain (valuable) impacts on per capita generation and additionally endurance of the collaborating populaces.
The age structure of a populace is a significant factor in populace elements. Age structure is the extent of a populace in various age classes. Models that fuse age structure permit better expectation of populace development, in addition to the capacity to connect this development with the degree of monetary improvement in a district. Nations with fast development have a pyramidal shape in their age structure charts, demonstrating a prevalence of more youthful people, huge numbers of whom are of regenerative age.
So, the correct answer is “option D”.
Age structures of territories with moderate development, including created nations, for example, the United States, actually have a pyramidal structure, yet with numerous less youthful and regenerative matured people and a more prominent extent of more established people. Other created nations, for example, Italy, have zero populace development. The age structure of these populaces is more funnel shaped, with a considerably more prominent level of moderately aged and more seasoned people.