Answer:
absence
Explanation:
anaerobic microbes grow best in an environment without oxygen because they adapted to create energy without oxygen. the answer is in the word "anaerobic" because the prefix "an-" means "without" and the suffix "aerobic" means "oxygen.
together, anaerobic means "without oxygen"
It is true that drugs need to go through a series of research studies and trials to ensure safety and efficacy.
Answer:
Thank you and thats beautiful
Explanation: