The primary energy system to fuel cycling for 15 minutes is THE AEROBIC GLYCOLYSIS SYSTEM.
There are different energy systems for fueling different types of physical exercise, the type of system that is used depend on the duration of the physical exercise. The energy system that exist are anaerobic glycolysis, aerobic glycolysis, phosphagem system and fatty acid oxidation. The aerobic glycolysis energy system relies on the complete breakdown of glucose. The pyruvate which is the end product of glucose oxidation is further broken down to acetyl coA, which then enters into the citric acid cycle. The aerobic glycolysis energy system is used for physical exercises that last between three to twenty minutes.
Answer:
Electrons can move from one substance to another when objects are rubbed together.
The sun rays are received by the plants and explell oxygen and we breath the oxygen to be able to survive
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The plants remaining would be the only plants then will come as the animals die because they cant eat plants because all the plants are gone then will come us which we will die because there aren't any animals to thrive on