What is true of sand dunes?

a) they are built by waves.

b) they are made by rivers cutting through land.

c) they are built by water carrying sediment away.

d) they are built by the deposition of sand by wind.

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction

The third stage of cellular respiration is (2 points)