Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
Water erosion is usually what people think of, but ice, wind and gravity can also cause erosion.
Water erosion is usually along rivers. As the water moves quickly by it rubs on the rock and dirt, causing rivers to slowly get wider.
Ice erosion is caused by glaciers. Sometimes it's a glacier rubbing against land, and there's a lake that was made by a glacier making it's way onto land and then melting.
Wind erosion is a big problem in fields and large open plains with loose dirt. The wind just blows all the dirt away.
Gravity can cause erosion and cliffs. Sometimes along a mountain or cliff the rock won't be able to hold itself up anymore, and gravity will pull it down.
Your answer would be all of them. Wind, water, ice, and gravity.
Answer:
Due to convergent evolution/ analogy
Explanation:
Analogy in evolution is the development of similar or analogous structures in distantly related species occupying the same environment. This is because the species have developed similar adaptations, over time, that enables them to survive in their environment.
Its Unipotent !! C!! the word itself describes if you try to understand!!
Answer:
Other important ethical issues relate to informed consent of both donors of gametes and embryos as well as recipients of stem cells and stem cell products. Further, there has been some concern related to the commercialization of the process, justice, and the responsible conduct of research.
Explanation:
