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 deposition of sand by wing.

What types of energy transfers and energy transportations are involved in the domino chain reaction?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?