Which of the following best illustrates the role that gravity played in the formation of our solar system? a. gravity allowed the nebula to expand and move outward. b. gravity caused the nebula to cool enough for planets to form. c. gravity removed excess gas and dust from the cores of the planets. d. gravity pulled particles of dust and gas together to form planets.

20 the compound al(nh3)2 has atoms of nitrogen.

In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary