Natural selection does not always result in an increase in genetic diversity.

select the best answer from the choices provided

tf

The right answer is True.

If the selection is made on the phenotype, at the individual level, the understanding of the variation of the characters over time and thus of the evolutionary processes requires that one is interested on a larger scale: sets of individuals ( populations).

The genetic diversity resulting from mutations and rearrangements of the genome means that at a given moment, a natural population is not homogenous from a genetic point of view: there are for the most part genes and sequences several alleles, whose frequencies ( allelic frequencies) will vary over time (it could increase, and sometimes decreaqse geneic diversity between the individuals).

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c