Answer N0 1)
Lights are left on overnight:
If lights are left on overnight, then the process of photosynthesis will also occur during the night time when the sun is not present. Hence, this method is beneficial.
Farmers can also add fertilizers to the soil:
The addition of fertilizers to the soil allows essential nutrients to be taken up by the plant which will enhance its photosynthetic activity.
Extra carbon dioxide can be pumped into the green house. This comes from the burning of fuel like paraffin which releases. Carbon dioxide as a by-product.
Plants convert carbon dioxide and water into oxygen and glucose during photosynthesis. Hence, this process can be somewhat beneficial.
Fossil fuels are burnt (expensive) to keep the green house nice and warm.
Burning of fossil fuels to keep the green house warm is not an efficient process because this will deplete the natural resources.
Answer No 2)
Plants are protected from unfavourable conditions in a green house. Conditions such as harsh temperatures or harsh wind or floods can completely destroy crop plants. Hence, plants can be grown in the green house where favorable conditions are maintained for their growth.
Anaerobic exercise is one situation that would cause a buildup of lactic acid in human muscle cells. As the cells switched over from aerobic respiration to fermentation in order to produce ATP, lactic acid would be produced in relatively large quantities as a byproduct. This allows NADH and FADH2 electron carriers to be oxidized without the electron transport chain and would allow Glycolysis to continue.
C is the correct answer because
1. producer creates its own food
2. consumer eats producer so it gets energy
3. consumer or producer die giving way for decomposers
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Platelet aggregation and accumulation in response to injury is an example of positive feedback. Negative feedback brings a system back to its level of normal functioning. Adjustments of blood pressure, metabolism, and body temperature are all negative feedback.
The control of blood sugar (glucose) by insulin is a good example of a negative feedback mechanism. When blood sugar rises, receptors in the body sense a change. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels.
Examples of processes that utilize negative feedback loops include homeostatic systems, such as: Thermoregulation (if body temperature changes, mechanisms are induced to restore normal levels) Blood sugar regulation (insulin lowers blood glucose when levels are high ; glucagon raises blood glucose when levels are low)
