<span>The answer is ‘radiating excess body heat into the
environment’. Vasodilation of cutaneous
blood vessels shunts blood closer to the surface of the skin. This allows dissipation
of heat to the environment. This is also ideal if there is a breeze in the environment
to facilitate this process (the reason why people us fans in hot days). If the
body is unable to shed this heat (maybe because it is too hot in the environment)
then the person may experience heat stroke</span>
Natural selection acts directly on a population's gene pool, but individuals evolve.
Natural selection acts directly on genotype, but individuals evolve.
Natural selection acts directly on individuals, but genes evolve.
Natural selection acts directly on phenotype, but populations evolve.
D
The largest contrast in temperatures between cells, which forms jet streams, occurs between the Ferrel and Polar cells, and especially during Winter. This forms a strong polar jet stream with high-speed that can exceed 120 km/h.
Explanation:
There are usually 3 circulating air masses from the equator to the poles on either hemisphere. These cells are called the Hadley, Ferrel and Polar cells. The polar jet stream occurs between the Ferrel and Polar cells while the subtropic jet stream occurs between the Ferrel and Polar cells. These jet streams occur due to the temperature difference between the air masses of the cells.
These jet streams are high altitude narrowing blowing winds. They occur in the tropopause and blow at speed of 120 to 250 mph.
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Answer:
humans had more developed 'social' brains than Neanderthals, which enabled us to colonize new habitats and adapt to climate fluctuations
Explanation:
A more developed brain is considered to be an adaptive advantage that enabled early humans to leave Africa and colonize new habitats. Modern humans are able to adjust to new environments, situations, and socialize with other humans because the brain is a social organ. Although Neanderthals were able to occupy an important area of Europe, H. sapiens could colonize faraway lands, migrating into tropical forests, deserts, and glacial lands (colder areas than those colonized by Neanderthals). These early humans formed social groups which enabled them to find food more easily, thus greatly increasing their chances for survival.
