One of the reasons why the fish population remains approximately the same from one generation to the next is because not all the eggs laid will survive to adulthood. There are several factors which bring about elimination of the the newly hatched eggs. Examples of these are predators and diseases which eliminate the young offsprings at different stages before they develop into adulthood.
Secondly, production of many eggs by the different fish species leads to competition for survival. Resources such as water, food, oxygen and shelter have to be fought for and its only the fittests that will be able to survive till the reproduction stage.
The answer is C. The symbiotic relationship has evolved for so many years such that the two are obligate symbiotes and cannot function normally without the other. Chloroplast and mitochondria are believed to have been once free-living bacteria according to endosymbiosis theory.
Answer:
Thin fur is helpful in hot environments, but harmful in cold environments
<span><span> Fungi release enzymes which in turn help in digesting external
material. Then the fungi absorb that digested compound that is created
by the enzyme.<span>
</span></span>Plants normally make their own food by the process of photosynthesis. Plants take in water through the roots from the ground, absorb sunlight during the day and take in carbon dioxide from the air to make their nutrients. So plants are normally autotrophic in nature. Animals on the other hand consume plants as well as other animals to produce nutrients. So animals are mostly heterotrophic in nature. Fungi release enzymes which in turn help in digesting external material. Then the fungi absorb that digested compound that is created by the enzyme.<span>
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