Thomas Malthus was economist who proposed that human populations grow faster than the resources they depend on which becomes limiting factor for them, causing the increase of populations but also increase of famine and diseases. As a consequence, the weakest members die. Darwin linked this with the “survival of the fittest" (naturals elections favors the best suited for reproduction and survival).
Georges Cuvier was anti-evolutionist and religious man, but he did have influence on Darwin theory of evolution (natural selection). He was against linear system of classification so, his believes that there is more than one lineage for species helped Darwin shaped his theory.
Charles Lyell geologists who believed that geologic processes that were at the beginning of time were the same ones that were happening at the current time (processes work the same way through time). He explained that slow changes built up over time, so Darwin linked that with the way that life on Earth changes. (small adaptations that accumulated over long periods of time change a species).
The correct answer is: reduce the loss of body heat to the environment. A <span>countercurrent heat exchanger works by transferring heat from one part of the body to another that has cooled down. For example, in dolphins, body parts of a high surface area such as flippers are rich in veins. Blood running through these veins that is cooled down is run close to arteries containing warmed-up blood, and some of the heat energy from the arteries is transferred to the veins, thereby allowing the dolphin to conserve heat energy. </span>
Answer:
the end of G1 phase, end of G2 phase, and partway through M phase (the spindle checkpoint) to regulate the cell cycle.
Explanation: