Most of the gas about 72 percent is hydrogen. Nuclear fusion converts hydrogen<span> into other elements. The sun is also composed of about 26 percent </span>helium<span> and trace amounts of other elements </span>oxygen<span>, carbon, </span>neon<span>, </span>nitrogen,magnesium<span>, iron and silicon.</span>
Approximately 72 hours (3 days)
Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetah.
Limiting factors are those factors in the ecosystem which can limit the growth of population of a species in an ecosystem. Predation and competition are two limiting factors in the ecosystem that can decrease or extinct the population of a species. Predation is a limiting factor in which predatory organisms are dependent upon a prey organisms. This is natures way of limiting the surplus growth of prey population and to maintain a balance in ecological community. Competition is a limiting factor in which one or more same or different type of organisms compete for the same resource in an ecosystem. The one which is more competitive will derive those resources other than the one which is less competitive.
According to the given data, it is evident that the population decline in predator cheetah and lion populations because of decline in zebra population but the decline in cheetah population is more than that of lion. It explains the fact that lion is more competitive than cheetah in deriving the food which is already limited. Therefore, lion outcompete cheetah.
The part of the aorta that arches and turn down Ward
Answer:
Autonomic nervous system.
Explanation:
Autonomic nervous system may be defined as the division of the peripheral nervous system. Autonomic nervous system has been divided into parasympathetic nervous system and sympathetic nervous system.
The autonomic nervous divides is involved in controlling the respiration activity, digestive system and cardiovascular activity. This efferent nervous system controls the different type of the muscles like cardiac muscle, smooth muscle and the functioning of glands.
Thus, the answer is autonomic nervous system.
