Reproductive separation may result in the evolution or speciation of two different species. This hinders the capability of different species to produce an offspring. It also serve as a barrier to maintain integrity of each species wherin gene flow is reduced.
How would u approach the first one, #54
The correct answer is Birth.
The two elements that raise population size are natality—the number of people who are added to a population over time as a result of reproduction—and immigration—the movement of people into a location. Most births are to folks who are young adults or older. Even at replacement fertility levels (when each woman has approximately an average of two children), there will be more births than deaths if the proportion of young adults to older adults is higher where mortality is highest. Immigration and birth rates lead to population growth. The population shrinks as a result of death rates and emigration. A population that has a negative growth rate is one in which there are more deaths and emigrants than births.
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Answer:
C
Explanation:
Two amoebeas because when a amoebea splits it has the same information copy as its parents
