During periods of declining water levels, blood volume decreases causing a decline in blood pressure. this is referred to as .low blood pressure causes the kidneys to increase the secretion of from the jg cells. the activation of stimulates widespread vasoconstriction, release of adh from the posterior pituitary as well as the adrenal cortex to release aldosterone. aldosterone acts on the of the kidney tubules to reabsorb greater amounts of from the tubular fluid. the release of directly stimulates the of the kidney to increase water reabsorption from the tubular filtrate. the net result of angiotensin ii, aldosterone, and adh cooperatively are an in blood pressure resulting largely from increased blood volume.

Hypotension ,Renin, Angiotensinogen,proximal side,water,ADH,collecting ducts,increase

Explanation:

During periods of decline water levels blood volume decreases causing a decline in blood pressure.This is referred to as hypo-tension.Low blood pressure causes the kidney to increase the secretion of renin from the JG cells.The activation of angiotensinogen stimulates widespread vasoconstriction,release of ADH from the posterior pituitary as well as the adrenal cortex to release aldosterone.Aldosterone acts on the proximal side of kidney tubules to reabsorb greater amount of water from the tubular fluid.The release of ADH directly stimulates the collecting ducts of the kidney to increase water re absorption from the tubular filtrate.The net result of angiotensin 2,aldosterone and ADH cooperatively are an increase in blood pressure largely from increased blood volume.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602