1. An image of the carbon cycle is shown.
(LS2.2 - 1 point)
CO
Photosynthesis
Which action could lead to a reduction in atmosoheric carbon?
Plant
Respiration
Combustion
Animal
Respiration
A. Using coal to power a factory
B. Burning logs in a fireplace
C. Animals eating mushrooms in a field
D. Humans planting trees in a forest
2. Legume plants such as beans have a
symbiotic relationship with bacteria and form nodules in the roots of the plant that convert atmospheric nitrogen gas into nitrogen compounds the plant can use. The image shows root nodules on a legume plant.
If root nodules were prevented from forming, which of these would be the most likely impact on the local community?
(LS2.3 - 1 point)
A. The plants would no longer be able to perform photosynthesis.
B. The plants would increase water consumption to compensate for the loss of nitrogen.
C. The soil would become depleted of usable nitrogen compounds.
D. The concentration of atmospheric nitrogen gas would decrease.