Which is an example of a negative feedback? the accumulation of blood platelets, which cause blood clotting, is triggered by a tear in the lining of the blood vessel. the production of red blood cells, which transport oxygen, is triggered by a low level of oxygen in the blood. during childbirth, the secretion of hormone oxytocin, which intensifies the contractions, is triggered by uterine contractions. nextreset

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

What are the seven economic and social goals?