Counter current flow is the opposite movement of water against the flow of blood in the fish's gills.
<span>In a litter of kittens, some of the kittens have coloring that is completely different from their parents.
because of
</span>The placement of the genes on the parent chromosomes
and crossing over also play some role in it
so i conclude most appropriate answer is B
hope it helps
Answer:
Vein, in geology, ore body that is disseminated within definite boundaries in unwanted rock or minerals (gangue). The term, as used by geologists, is nearly synonymous with the term lode, as used by miners. There are two distinct types: fissure veins and ladder veins.
Explanation:
D. There is not a point where the car doesn't move because the line didn't go flat at all so the car kept moving.
C. The velocity is postive
B.The average velocity is 50m/2sec
A.The graph tells us that the car didn't stop moving and the car didn't make kept moving forward it didn't go back