A population is the population in a community
A community contains a population
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Answer:
Hardness of a mineral is defined as the resistance to breaking, and density is defined as the mass of a substance per unit volume.
The density and hardness of a mineral, that is formed from through metamorphism are relatively much harder because the metamorphic minerals are formed under extremely high temperature and pressure conditions. These are high-grade minerals.
On the other hand, the density and hardness of a mineral formed through evaporation are much weaker in nature, because these minerals are formed when the water is eliminated due to the high rate of evaporation.
So, it can be concluded that the density and hardness of as mineral formed through the metamorphic process is highly stronger and harder than those that are formed through evaporation.
Reproductive isolation is the separation of species populations on the basis of behavior, geography or time. According to the given information statement ii, i.e., one population breeds in late spring and one in late summer and statement iv, i.e., singing by male of first population than other ones shows evidence that two populations are likely experiencing reproductive isolation and genetic exchange.
<h3>What is genetic exchange?</h3>
New genotype of species are formed through the process of genetic exchange.
Reproductive isolation for example, is in changes of bird song from different species of finch. Females of one species of finch are unable to recognize the bird song of males. This is a barrier that is pre-zygotic.
Another includes one population breeds in late spring and one in late summer and singing by male of first population than other.
Thus, the correct statements are ii and iv so the correct option will be D.
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Temperature difference and Earth's tilt
Because it’s in smaller price so therefore can’t melt faster than the block, since the smaller peices will melt at the same time as one another.
