Answer:
osteoblasts.
Explanation:
PTH is produced to prevent hypocalcemia, ie low blood calcium concentrations, which can lead to seizures and heart failure in more severe cases and when untreated. In bone, PTH stimulates and determines the activation and recruitment of osteoclasts (cells that participate in the process of absorption and remodeling of the bone matrix), which results in bone resorption. However, mature osteoclasts do not have PTH receptors, unlike their bone marrow progenitors, known as monoblasts, which undergo the action of PTH leading to stimulation and differentiation in mature osteoclasts.
<em>PLATO </em>
A.
The population's birth rate falls below its death rate after a predator is introduced.
B.
A lack of mating opportunities increases the population's level of emigration.
<u><em>C.</em></u><em> </em>
<em>An increase in food availability increases the birth rate in the population.</em>
D.
The population's level of immigration falls below its level of emigration.
Answer:
The water carried the pieces of paper to the sides of the container.
Explanation:
The convection model shows how Earth’s mantle moves Earth’s plates. It also describes how hot rock flows in the Earth's deep interior in order understand fully how this particular flow shapes the surface of the Earth.
The convection model talks about how the temperature of the solid due to an external field such as fluid buoyancy can induce a fluid motion. This explains why water carried the pieces of paper to the sides of the container.