Answer:
B
Explanation:
it should be a whole number and not 1/2
3 is your answer. When developing an embryo, fertilization of gamete cells is stage that it goes through .
The changing climate is likely to disturb the pattern of rains within the Amazon, causing them to decrease. Decreased rainfall will meant that the large amount of vegetation that the orangutan resides in will be depleted. Therefore, conservationists should focus on preserving the orangutan's habitat in order to save it.
Answer: After seven months.
Explanation:
The blood carries various substances that must be transported from one part of the body to another. Red blood cells are an important component of the blood because their function is to carry oxygen to the body tissues and exchange it for carbon dioxide, which is carried and removed by the lungs.
Erythropoiesis is the process of red blood cell (erythrocyte) production. It is stimulated by a decrease in O2 in the circulation, detected by the kidneys, which then secretes the hormone erythropoietin. This hormone stimulates the proliferation and differentiation of red blood cell precursors, which triggers an increase in erythropoiesis in hematopoietic tissues and ultimately in the production of red blood cells. <u>In adults, red blood cells are formed in the red bone marrow.</u>
In early developing fetuses, erythropoiesis occurs in the mesodermal cells of the yolk sac. In the third or fourth month, erythropoiesis moves to the liver. After seven months, erythropoiesis occurs in the bone marrow.
