I have multiple answers to this question:
1. to make (an idea, statement, etc.) clear or intelligible; to free from ambiguity. 2. to remove solid matter from (a liquid); to make into a clear or pellucid liquid. 3. to free (the mind, intelligence, etc.) from confusion; revive
Answer:
Place a glowing splint in the test tube, and if it reignites, it could be oxygen. Place a burning splint into a test tube, and if it goes out, it could be carbon dioxide. Or, place carbon dioxide gas in limewater, and if it turns milky and gets chunks, it is carbon dioxide.
Answer:
hemotrophs are organisms that obtain energy by the oxidation of electron donors in their environment. Chemoautotrophs use inorganic energy sources to synthesize organic compounds from carbon dioxide. Chemoheterotrophs are unable to utilize carbon dioxide to form their own organic compounds.
Explanation: