Answer:
B
Explanation:
I believe it is meiosis because there are two parts in which it helps to increase genetic variety. In prophase 1, the genes cross over, which increases the variety. Also, the chromosomes are assigned randomly in Metaphase 1.
Hope this helps:)
Endothermy is just another word for the term "warm-blooded" and ectothermy is closest to the meaning of "cold-blooded." The obvious pros of endothermy is the ability to perform more activities within a larger range of temperatures. For example, a human would be able to walk around in 100 degree weather Fahrenheit. They would probably be sweating a lot to maintain body temperature and would require lots of water, but they could do it. In contrast, a Lizard would most likely be forced to stay in the shade under a rock or another place as they have no system for maintaining their body temperature, and thus would have to wait until the environmental temperature cooled down before they could find food or move around. The cons of endothermy is it requires a lot more energy for an organism to maintain homeostasis, which is also a pro of ectothermy as lizards and similar ectothermic organisms can utilize more of their energy to d food or move around. Hope this helps!
Answer:
Your body sends a message to the lungs and tell the lungs to breathe in more oxygen so that the oxygenated blood can travel to the muscles oxygenating the cells within that specific muscle and giving them energy to use the sugars stored in fat or food from digestion. The heart beats faster so that the cells supply keeps up and continues to beat fast for that specific diration of time until your breathing slows down and it no longer needs to work as fast to supply the muscles with as much blood.
The forester made an observation that the forest had mostly mature hemlock and very few young hemlock. This is common for outdoors scientists to make observations on the part of the natural world that is their field of study, and then draw conclusions from these observations. For example, the observation that the western edge of North and South America has a string of volcanoes or the ring of fire, plus the concordance between the east coast of South America and the western coast of Africa let first to the theory of continental drift and finally to plate tectonics. Similarly, the paucity of young hemlock and the existence of mature hemlock could also spark a conclusion, such as maybe the mature hemlock were diseased so couldn't create new offspring or perhaps a fire had wiped out the young ones, as two possible explanations which would depend on the actual circumstances observed by the forester.