Individuals who suffer from sicke cell anemia have deformed erythrocytes. The parasite that causes malaria(plasmodium malarie) uses erythrocytes for reproduction and as part of the infection. Those parasites can't infect sickle erythrocytes. It supports evolution by natural selection because individuals who had sickle cell couldn't get malaria so they lived long enough to have offspring and pass on their genes(including sickle cell). Individuals who didn't have sickle cell died of malaria and didn't get to have offspring. That's why sickle cell has a high frequency in the continent of Africa where malaria is also frequent.
The ozone layer, it keeps the UV rays out but because of us humans and the chemicals we release it is breaking down the molecules and now some harmful UV rays can come onto the earth surface
Binary fission is a type of asexual reproduction seen in prokaryotes, such as archaea and bacteria.
Binary fission is the formation of daughter cells by the separation of an organism into two parts. The division of the genetic material occurs by the method of duplication. The daughter cells are identical to each other. The examples of organisms that undergo binary fission are: Escherichia coli, Salmonella enterica and Clostridium botulinum.
Asexual reproduction is the process of producing new organism without the fusion of gametes. Only one parent can give rise to offspring. There are several methods of asexual reproduction. These are: binary fission, fragmentation, budding, vegetative propagation and spore formation.
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I believe it's sexual reproduction in sea stars if that's the question.
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