Answer:
1. physical and chemical barriers
2.non-specific innate response
3. specific adaptive responses
Explanation:
Answer:
The correct answer is C: competition for resources
Answer:
They used artificial selection
Explanation:
Breeding animals who had desirable or good traits. For example, they bred cows who produced the most milk and plants that produced the most vegetables. :))
Fermentation is the process that releases energy without using oxygen . In cellular respiration, anaerobic fermentation contrasts with aerobic cell respiration. Both processes convert glucose from food into adenosine triphosphate for energy for cells.