A teacher leads a class discussion on the students' physical traits and which of their parents they look more like. Some students state that
they look like their fathers; others state they look like their mothers,
and a few state that they look like a mixture of both parents. The
students were then asked to determine which macromolecules play a
major role in the passing of genetic information from parent to
offspring.
Which macromolecule should the students choose?

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Twind is considered to be an abiotic factor because it.?