The four principles of natural selection are variability among members of a species, heritability of the variable features, differences in population members' ability to reproduce and survival of the fittest in terms of variability, heritability and reproduction. Natural selection is one of evolution's four mechanisms.
Answer: Well for one, Differentiate is when a cell matures and is used in a specific function. Meristem is a cell which never differeates and constantly divides so it is a mitotic cell. Elongation is the plant growing length wise therefore the meristem elongates the plant. Vascular cambium is the cambium which starts out in vascular bundles of the plant and then grows to form a ring inside the stem of plants that live for more than year- it causes and increase in thickness of the stem and branches.
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Answer:The ocean is constantly in motion, moving water from place to place via currents. The Gulf Stream brings warm water from the Gulf of Mexico all the way up to the Norwegian Sea. As the warm water comes in, colder, denser water sinks and begins moving south—eventually flowing along the bottom of the ocean all the way to Antarctica.
Explanation:
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Answer:
Homeostasis is the process to maintain balance in body. Homeostasis in sugar can be maintained by two pancreatic hormones-
1-Insulin
2-Glucagon
Explanation:
Insulin - secreted by beta cells of islets of langerhans in pancreas. It lowers blood sugar level when high concentartion of sugar is present in blood. It converts sugar to glycogen by the process of GLYCOGENESIS. It allows insulin receptors on hepatic cells to absorb glucose molecules from blood. To lowers the glucose concentration in blood stream.
Glucagon - secreted by alpha cells of pancreas. It increases blood sugar level when sugar level is low in blood. Glucagon converts glycogen into glucose. Stored glycogen can be reconvert into glucose molecules with help of this hormone. this process is known as glycogenolysis. When blood sugar concentration is low in blood stream.
<em>With the equilibrium between these two hormones homeostasis is maintained through blood sugar project in body</em>
They use the process of photosynthesis to get CO2 from the air. Using CO2, H2O, sunlight, they make oxygen to give us and we give them CO2.
