Alipid bilayer allows certain molecules to pass through and blocks other molecules. which structure is most often protected by a lipid bilayer?

Through an uplift under the earth's crust at a divergent boundary a is formed. a. cliff c. plateau b. fault d. mountain select the best answer from the choices provided a b c d i know the answer is not b

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim