(b) the grassland is ploughed up and turned into farmland. crops of maize are grown on it
year after year.
(i)
predict and explain the effect of this change on the nitrogen cycle and on the crop
yield.
--effect on the nitrogen cycle
--effect on crop yield
(ii) suggest one way in which the farmer could prevent the effect on crop yield.
Answers: 3
Biology, 22.06.2019 10:30, haileyw123
Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.
Answers: 3
Biology, 22.06.2019 16:40, ralphy34
Cells a and b are the same size and shape, but cell a is metabolically quiet and cell b is actively consuming oxygen. oxygen will diffuse more quickly into cell because . b the oxygen molecules inside cell b have a higher kinetic energy b. a its membrane transport proteins will not be saturated c. a the diffusion gradient there is shallowerd. b the diffusion gradient there is steeper
Answers: 2
(b) the grassland is ploughed up and turned into farmland. crops of maize are grown on it
year...
year...
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