How do predators affect an ecosystem

How is the sickle-cell allele maintained through natural selection? A.) Individuals with two recessive alleles have very high rates of reproduction. B.) Mosquitoes that pass along the parasite also pass on the recessive allele. C.

How can corrective lenses be used to refocus light and resolve myopia and hyperopia? - ?

There are many different enzymes located in the cytoplasm of a single cell. how is a specific enzyme able to catalyze a specific reaction?

Why is the inner core of the earth solid, while the outer core is liquid? A. The pressure is greater in the inner core. B. The temperature of the outer core is higher. C. The inner core is made mostly of iron, and the outer core is made of rock. D.

If u were a scientist examining the DNA sequence of the two unknown organisms that you hypothesize share a common ancestor, what evidence would you expect to find?

What is the pH of this liquid that has a distinctly sour flavor?

A body of water formed when ocean water floods continents is called an

Is evolution real because I think that chickens are close relatives to velociraptors

Anemia is a disorder where there is not enough hemoglobin in the blood. Why would this disorder lead to shortness of breath?

What consists of all the living organisms in an area and the non-living aspects of the environment?