Answer:
Calcium
Explanation:
Parathyroid hormone (PTH) is a hormone that is secreted by the parathyroid gland. It is the major regulator of the plasma concentration of calcium ions. It regulates calcium ions in the kidney, intestine and bones.
In the kidney, is involved in the re-absorption of calcium in distal ducts and the renal collecting duct, it is also involved in activating the conversion of 25-hydroxy vitamin D into 1,25-dihydroxy vitamin D (calcitriol).
In the intestine, PTH is involved in the absorption of calcium, by increasing vitamin D production.
In the bone, it helps in regulating calcium levels; when serum calcium level is low, PTH stimulates the activity of the osteoclast, to produce more calcium.
Answer:
B&C
Explanation:
B explanation~
"The Kuiper belt is home to three officially recognized dwarf planets: Pluto, Haumea and Makemake. Some of the Solar System's moons, such as Neptune's Triton and Saturn's Phoebe, may have originated in the region."
C explanation~
Image result for which is the only body in the solar system without an atmosphere.
Pluto
Pluto is a dwarf planet that lies in the Kuiper Belt, an area full of icy bodies and other dwarf planets out past Neptune.
D i believe i’m sorry if this is not correct if not try c
Answer:
Diffusion
Explanation:
Diffusion is the process whereby molecules move from an area of high to low concentration
Answer:
Oviparous
Explanation:
This is similar to animals laying eggs. Eggs are the tough cases inside which you have the embryo. Next to it, there are all the necessary nutrients it needs to develop outside its mother. Birds develop entirely outside their mothers, needing only the right environmental conditions to do so.
