The bar chart shows the concentration of DDT in the four organisms. 1600 -
1400 -
1200 -
1000 -
800 -
600 -
400 -
200 -
0
concentration
of DDT
(parts per million)
chlamydomonas daphnia
fish
heron
Give one reason for the difference in the concentration of DDT in these organisms.

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Explanation:

what are the choices?

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.