State whether each statment is true
or false and give a reason why.

1.Growth
respiration increases exponentially as temperature increases.

2.Plants with a
N:P ratio less than 14 are thought to be more N limited than P
limited.

3.Plants that have
a low tissue N concentration will tend to have a lower rate of
decomposition.

4.Methane
emissions from wetlands increase exponentially as temperature
increases.

5.On average, only
about 15% of the total terrestrial NPP is consumed by
herbivores.

6.Seasonal
variations in atmospheric CO₂ concentration are higher
in the northern hemisphere than in the southern hemisphere.

7.Biological N
fixation declines as soil N availability increases.

8.Global climate
change may actually cause regional cooling in places like the
United Kingdom and Scandinavia.

9.Detrital C:N
ratios decline as detritus sinks deeper into the ocean.

10.Climate change
will cause an increase in oceanic C uptake.