Answer:
parathyroid hormone (PTH), which is produced by the parathyroid glands. I hope it helps
Explanation:
Answer: False
Hope this helps
The retina and optic nerve are part of the central nervous system, as they are derived from the neural tube. We know that oligodendroglia provide myelin for the central nervous system and Schwann cells provide myelin for the peripheral nervous system. Therefore, oliogodendroglial cells must provide the myelin for the optic nerve.
N and P limitation is strongest in aquatic ecosystems (because
light and water isn't) governed by same principles as terrestrial ecosystems radically
different environmental controls streams have been treated as "sewers of
terrestrial ecosystems" yet stream ecosystems have their own
characteristics generated by the interaction of biota with the physical and chemical
properties of the system unlike terrestrial ecosystems, nutrients
"spiral" rather than cycle. The more limiting the nutrient, the
tighter the spiral. Detritus/heterotrophs <---> autotrophs.
