<span>Amitriptyline
is commonly used as an anti-depressant.
However, the tricyclic adjuvant drug has been shown to cause relief of pain. However, it has not been
determined as to whether the analgesic effects of the drug is due to its pharmacological
activity in the body or due to secondary effects from its action of mood-alteration. </span>
I don't know Number 3 so i can't answer.
4. (B) Pulmonary arteries the only artery in the choices that deliver deoxygenated blood.
5. (D) Immunoglobulins are proteins found in blood plasma.
6. (C) Diastolic pressure. I think you meant "relaxes" not "relates"
7. I think the answer is (A) Enzymes. Hormones can also be an answer i think.
Hi!
The selection in this case would be natural selection.
Natural selection is a process that involves organisms with favorable characteristics having a higher chance of reproductive success, and passing on their traits onto the offspring. This process, as opposed to artificial selection, does not involve human intervention and is a natural phenomenon.
In our case, whales with maximum length (the favorable trait) are mating on accord of their own, without external factors governing the process; hence, the selection is natural.
Hope it helps!
23 pairs or 46 individual chromosomes