Answer:
A: Eating a sandwich
Explanation:
During labs eating is a big no. Some food can catch on fire, or be contaminated or breed germs that can affect the experiment. Wearing googles is a good idea and tying back hair is a must when using fire. The work area should always be clean so A is the answer
According to a source the answer is <span><u>Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.</u>
These cyanobacteria species were the first ones to "produce" oxygen as a by-product of the photosynthetic mechanisms which enables organisms to make their own food. </span>
Question 3. Answer is A. Luster
Question 4. Answer is B. False
Question 5. Answer is B. Vitreous Luster
Question 6. Answer is A. Calcite
I’m so happy to help :) Have a awesome day I hope you pass!!
Answer: HEYYYY also if I’m correct anaerobic respiration doesn’t need oxygen maybe I’m wrong id.k
Explanation: