Part A An organism's adaptations are specific to its native environment. An organism that lives in a coniferous forest will
have different adaptations compared to an animal that lives in a tropical rain forest. The following graphs show the
temperature and precipitation throughout the year for two different forests: a coniferous forest in Canada, and a
tropical rain forest in Belize.
Evaluate the graphs, and then explain why plants from these two ecosystems will have different adaptations. In
your answer, explain the survival challenges that plants face in these two environments.
Coniferous Forest
140
120
100
80
Temperature (0)
30
20
10
0
-10
20
-30
40
J F M A M J J A S O N D
Month
Precipitation (mm)
60
40
20
0
JFMAMJASOND
Month
Tropical Rain Forest
300
30
20
10
250
200
0
150
Precipitation (mm)
Temperature (C)
100
50
-10
20
-30
40
J F M A M J J A S O N D
Month
0
J F M A M J J A S O N D
Month
lo

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).