Answer:
Many parts of the cardiovascular system (including the heart) are influenced by gravity. On Earth, for example, the veins in our legs work against gravity to get blood back to the heart. Without gravity, however, the heart and blood vessels change – and the longer the flight, the more severe the changes.
Answer:
A The mating of two particular sheep to produce thicker wool
Explanation:
Selective breeding, also known as artificial selection, is the process in which people will choose two parent organisms to breed and create offspring with desired characteristics. In this case we want the sheep to breed and produce thicker wool.
Set up the equation.
Since gravity and liquid densities are fixed (for the most part), the height of the liquid is the largest variable in the equation. The equation reads as Pfluid = ρgh, where ρ is the density of the liquid, g is the acceleration of gravity, and h is the height of the liquid (or depth of the fluid)
Answer: homo sapiens is the only species with a large enough oral cavity and a low enough larynx to allow for speech production.
<span>One line of evidence that speech only possible for modern homo sapiens is the anatomy of their throat. Speech depends on certain anatomical arrangements and the Homo sapiens is the only species with a large enough oral cavity and a low enough larynx that would allow speech.</span>