In regions where malaria is prevalent, the s allele is beneficial because: it causes red blood cells to distort, which makes them less hospitable to plasmodium, the parasite that causes malaria. it prevents mosquitoes from releasing plasmodium, the mosquito that causes malaria, into the blood. it improves the ability of the hemoglobin to carry oxygen. it improves the ability of the immune system to fight plasmodium, the parasite that causes malaria.

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

Which of the following is the scientific term for an organism that makes its food from inorganic materials? a.autotroph b.heterotroph c.embryotroph

Aspecies has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. which of the following will be true of this species' response to natural selection? there will be more deaths from natural selection because there is no mutation. there will be less genetic variation from recombination and a risk of not adapting quickly to environmental change. the species will increase in numbers because genetic variation is increased. the species will compensate for loss of genetic variation by hybridizing with other species. there will be fewer deaths from natural selection because sexual recombination always leads to extinction.