<span>The production of red blood cells, which transport oxygen, is triggered by a low level of oxygen in the blood. is correct.</span>
Depending on the size of the rock it comes from, yes and no. The smaller the rock, the smaller the crystals and vice versa.
Answer:The closer a location is to the equator, the more energy it receives from the sun. Therefore, a location's air temperature is affected by its distance from the equator. The amount of energy from the Sun does not change during El Niño years so there must be some other cause for cooling in New Zealand
Explanation:
Answer: Homeostasis
Explanation: One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.
