Answer:
organisms from one trophic level are consumed by organisms from the next level.
Explanation:
After sensing a drop in calcium levels in the body,parathyroid hormone from the parathyroid glands will be secreted in a negative feedback mechanism of homeostasis
first the parathyroid hormone stimulates release of calcium ions from the bone through the process of bone reorption
then the parathyroid hormone will reduce urinary excretion of calcium by increasing its re absorption in the nephron
finally , the parathyroid hormone will increase the rate of vitamin d synthesis in the small intestine to yield more calcium
One primary spermatocyte produces four spermatozoa, therefore, four primary spermatocytes will produce 16 spermatozoa.
The answer is water and the only oxygen-producing bacteria. This cyanobacterium is also known as Cyanophyta, are a phylum of bacteria that acquire their energy through photosynthesis, and are the only photosynthetic prokaryotes able to provide oxygen. In oxygenic photosynthesis, water is the electron donor.
Hi
T<span>he </span>troposphere<span> is the lowest layer of the Earth's atmosphere.
hope this helps:)</span>