What factors determine weather a human is a female or male

If the sun grew much stronger in intensity, how would the water cycle be affected?

Why are pesticides designed to kill insects more likely to harm lobsters and crabs than fish?

Darwin used many lines of evidence to show that natural selection is the mechanism of evolution. one line was the overproduction of offspring in animal species. how did darwin believe that this affected natural selection?

Predict the possible genotypes and phenotypes of the offspring produced from two people who are carriers of the allele for Sickle cell anemia (Ss).

How does gravity cause plates to move? Explain

Which of the following pairs are isotopes of the same element

A farmer cut a branch from his favorite, mature fruit tree, planted it in the soil, and it grew to be a new tree. The farmer's method of growing a new plant is a type of A) pollination. B) seed production. C) sexual reproduction.

is the net movement of molecules or ions from a region of higher concentration to a region of lower concentration brought about by the energy of the molecules

Which is closer to the Earth? the Sun or the outer planets?

Which term means a red blood cell? Erythrocyte leukocyte microcyte phagocyte?