Will give

why do you think females are typically the carriers of sex-linked traits, but those traits are not expressed?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Why can't you grow plants with adhesion water?

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?