What happens to the orbit of earth when its velocity is halved?   a. the orbit of earth around the sun becomes smallerc. the earth escapes the sunb. the orbit of earth does not changed. the orbit becomes more elliptical 

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

What is the correct answer for the process of water eroding soil? rills, sheet erosion, gullies sheet erosion, rill, gullies gullies, rills, sheet erosion sheet erosion, gullies, rills