They could do this by checking for a buildup of <u>lactic acid</u>.
<u>Explanation:</u>
Without oxygen glucose disintegrates in anaerobic respiration. The chemical process transmits energy to the cell from glucose. Anaerobic respiration does not contain carbon dioxide and water, but generates lactic acid. That can unintentionally lead to intense muscle cramps. Lactic acid has also been utilized as a by-product of energy metabolizing glucose and a waste product that has triggered burning muscle feeling. Research indicates, though that concentration of lactate can help alleviate the burn or muscle cramp produced throughout physical activity with higher intensity.
Pheromones play an important role in the behavioral isolation of insect species. These compounds serve to identify individuals of the same species and of the same or different sex. Evaporated molecules of volatile pheromones can serve as a wide-reaching chemical signal. In other cases, pheromones may be detected only at a short distance or by contact.
the earth spins once a day that's why we get day and night,but now while were spinning around the sun and spinning for one day its creates special zones for the seasons. And also the axis of the earth is always tilted ,and this also helps the seasons.
