Had to look for the missing details and here is my answer.
Based on the given scenario above regarding the Red Snapper, my prediction in relation to the biggest impact of this population due to oil leakage is that "t<span>he next generation of the Red Snapper population will be the most affected, as adults will not be spawning." Looking at the situation, the oil rig is seeping into the spawning grounds and this would greatly affect the adults. Hope this helps.</span>
Not all veins and arteries travel together but most of them do. Reason being that veins don't have good means of pumping up to the heart and this is facilitated by arterial pulsations.
Muscular contractions help venous to pump blood because when muscle contract venous sinuses are caused to contract and blood be pumped up. Where there is no gravity muscular contraction is important because of the veins of the lower extremity.
The ardenal gland produces hormonal chemicals valued to life such as Cortisol and Aldosterone.
