Answer: Because of reduced blood supply
Explanation:
The normal heart has low pyruvic acid to lactic acid ratio which shows the heart is working properly and has no problem in it.
The heart with low pyruvic acid to lactic acid ratio shows that it has some respiratory problem and does not have adequate oxygen supply.
Even the person having very low pyruvic acid to lactic acid ratio shows respiratory problem.
<span>B. maintain a balance of power.
The alliances among nations in Europe was established to maintain a balance of power in the region.
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It's B because during day when temperature of air is increased water retains most of the heat to keep the temperature of atmosphere at tolarable limit. During night when sun sets ocean transfer its heat to atmosphere as heat always transfer from region of high temperature to region of low temperature. In this way temperature of air is stabilized.
Hope it makes sense to you
Answer:
Explanation:
(a) interspecific competition: It is a kind of competition that occurs between the individuals that belong to different species competing for the same resource in an ecosystem. For example, lion and tiger populations thriving for the same type of prey that is deer population.
(b) intraspecific competition: Interspecific competition occurs between the members of the same population competing for limited resources. For example, trees of the same species competing for the sunlight and soil nutrients.
(c) predation: It is an ecological interaction that occurs between the superior or inferior species. One animal kills other animal to obtain it as a source of food. For example a tiger kills a deer to obtain it as food.
(d) territoriality: It is a quality of a species or a population of species to obtain the geographical area to an extent or limit where no other species or population can intrude. For example, lion shows the territory behavior to protect their children from predators.
(e) symbiosis: It is a type of biological interaction in which two species lives in association with each other. This interaction can be mutualistic, parasitic or commensalistic. For example, a lice sucking blood from animal is an example of parasitic symbiosis.
