<span>C. Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.
Example:
</span>Destruction of forests, mountains, and bodies of water to satisfy human needs result to the imbalance of nature which also give rise to global warming.
Animals and plants have lost their habitats. They lost their means to live. They lost their food sources and they suffer and die because of humans irresponsible acts.
hope I helped!!
<span>In the particular
order from
top to bottom , the answers are;</span>
<span>Genetic drift</span>
Gene flow
<span>Natural Selection </span>
<span>Gene flow occurs
during migration where alleles from one population
are introduced to another population hence increasing the population diversity. </span>
Genetic<span> drift occurs when the allelic frequency of a population changes due factors such as calamities and emigration or natural selection.</span>
<span>Natural selection is the force of ‘survival for the
fittest’ that is applied differentially on the population
by nature. </span>
Answer:
scavengers, predators, decomposers
<span>According to the data by Cancer Research UK, the incidence of cancer takes a sharp spike at around the age of 55, both for males and females. The answer is: nearly 77 percent of cancers are diagnosed at age 55 and above.</span>