It is difficult to calculate the Earth's carrying capacity because there are lots of resources that we can use and their is so much land on the earth that hasn't been used, but at the same time some resources are running low, and some resources we have a lot of, like food, so that it is why it is difficult to calculate
Answer:
It is ethical
Explanation:
It allows somebody a small chance of being able to walk again, or be able to do some functions that a previous injury did not allow them to complete
The sleep cycle is approximately 90 minutes.
Hope this helped :) <span />
<span>Transposons are mobile elements that are very important in the evolution of the eukaryotic genome. </span> <span>For example, transposons are involved in the formation of introns. Evolution often deactivates DNA transposons via RNA interference, leaving them as <span>introns. They are also important in the production of antibody diversity via </span>V(D)J recombination <span>because the mechanism of this recombination is similar to that of some transposons (probably originated from it).</span> Another advantage of these mobile elements is in the formation of interspersed repeats within genomes which are created by transposition. Because interspersed repeats block gene conversion, they protect novel gene sequences from being overwritten by similar gene sequences.</span> <span>Transposons can contain many types of genes.</span>