The ozone layer O A. is a layer of water in the deep ocean
O B. helps keep Earth warm
C. Screens out much ultraviolet radiation
O D. is getting thicker
arch
om

How do you date a sample of rock that you suspect as being one of the earliest on earth

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?