Answer:
Negative feedback.
Explanation:
The production of erythropoietin by the liver and kidneys is a negative feedback because with the production of erythropoietin, our body tends to move to become more stable state. The erythropoietin is produced by the liver and kidneys to increase the production of red blood cells if the quantity of red blood cells are lower than the normal range. If the number of red blood cells are decreases the oxygen level in our body is low that leads to unstable condition of the body but when the concentration of red blood cells increases, the body move towards stability.
Answer:
A. The temperatures are too high.
Explanation:
A desert is a region with extremes of temperatures and little to no rainfall.
Organic matter are the remains of organisms that have died. They are a very important component of soils.
Where temperatures are very extreme, there would be little to no life. Only special organisms that have evolved to adapt will survive such region.
Due to the low amount of plant and animal lives owing from the high temperature of deserts, little to no organic matter forms.
#19 due to weathering and erosion the rock from the stream was smoothened and without as much the rock from deep underground was/is very rugged and natural.
#18 Due to wind patterns the sand dunes are blew around and the sands shift and fly around with nothing to keep the sand in place the sand can go long distances or come long distances.
(I am back lol)
