Choose one of the biological systems described below. What health problems might the giants in the land of Brobdingnag have, or the giant child in the movie Honey, I blew up the Kid?
Transportation system--Your body generates heat according to its volume. But the rate of cooling depends on the area of your skin, since one way to cool down is perspiration. As the water on your skin evaporates, it helps to keep you cool.
Skeletal system--Your mass depends on volume, but the strength of your bones depends on the area of their cross-section.
help plzz.
In the first case the body of larger animals is subject to overheating because the heat generation rate increases faster than the cooling rate as animals become larger. In other words, [(size)^3 increases faster than (size)^2] . "Size" refers to a linear dimension.
In the second case, the probalems oif supporting the body increase with size, because weight increases with volume, (size)^3, while the load-bearing strength of bones increases with (size)^2
Think on the dinosaurs...
They couldn't handle heat...why?
Many of them wallowed in water to support their bodies, why?
The reason dinosaurs couldn't handle heat well is partly due to their large size. As I mentioned earlier, as animals become larger, their body generates heat faster than it can cool down. Dinosaurs were massive creatures, and their bodies would have produced a significant amount of heat. However, their cooling mechanisms, like perspiration, may not have been sufficient to keep them cool.
Additionally, dinosaurs existed during a time when the Earth's climate was generally warmer than it is today. The combination of their large size and the warm climate would have made them more prone to overheating.
Now, regarding why many dinosaurs wallowed in water, it was likely a way for them to regulate their body temperature and cool down. Water is an effective conductor of heat, so by submerging themselves or spending time in bodies of water, dinosaurs could lower their body temperature. Water can also help to support their large bodies, reducing the strain on their bones and joints.
It's important to note that these explanations are based on current scientific understanding and hypotheses, as dinosaurs lived millions of years ago and direct evidence is limited.