Answer:
The short term immunity which results from the introduction of antibodies from another person or animal.
Explanation:
Beavers are descendants of land-dwelling rodents similar to rats. The beavers however have adapted their body shape to live in water bodies like ponds and lakes. This can be hypothesised by saying that the early rodents or the ancestors of beavers were forced to find food in the waters. They lacked the flat tail and the webbed feet. With time the need to increase their ability to catch fishes and floating insects, the rodents with flatter tail and a bigger flat webbed feet gradually evolved. The rodents with flatter tails and webbed feet became adjusted to the life on water and became the modern day beavers.
The Differences in the Respiratory Systems<span> of </span>Frogs<span> & </span>Humans<span>. </span>Frogs<span> and </span>humans <span>need to breathe for the same reason: to bring oxygen into the body and to expel carbon dioxide. We both have lungs for these tasks, but that's where most of the similarities end.</span>
The one phylogenetic tree is more parsimonious than another that so rarer changes have to happen to make the basis of traits work on the tree.
<h3>Explain phylogenetic tree?</h3>
A phylogeny, or evolutionary tree, represents the evolutionary relationships among a set of organisms or groups of organisms, called taxa.
The advice of the tree symbolise groups of falling often species and the nodes on the tree define the common ancestors of those descendants.
Thus, rarer changes have to happen to make the basis of traits work on the tree.
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