Answer:
Aristotle first wrote about the practice of animal testing in ancient
Greece during the third century BC.
Explanation:
The respiratory system works with the digestive and circulatory systems to make cellular respiration possible. During cellular respiration, your cells use oxygen and glucose to release energy. Carbon dioxide is a waste product of the process. Carbon dioxide must be removed from cells.
Info from: Google lolz.
Answer:
The six most important characteristics of a civilization are cities, government, religion, social structure, writing, and arts and architecture.
Explanation:
Non living things like mountains,oxygen,water.etc
Homeostasis is a property of an organism or system that allows its to maintain the controlled parameters within normal ranges. Henry Barbour contributed to the understanding of this concept by his delineation of the reactions of the temperature of the body. This is in line with the same concept that was initially proposed by Claude Bernard.