Population of animals is split in half by a river. Before speciation is Sted, the two halves are rejoined when a drought causes the river to run would this impact the two populations? A. Speciation would still occur, because the two halves would be too different genetically to interbreed.
B. The likelihood of speciation would decrease as genes were shared between the two groups.
C. Traits that had developed through mutation would still exist only in one of the halves.
D. The two halves would be reproductively isolated.​

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

d. planting trees

the trees take in carbon to make oxygen.