Yes, you're correct, it's the first one. He should do research before he does an experiment, because someone else may already know.
Answer:
One more person is in the room
Explanation:
a person increased in the room
Photosynthesis takes place in the roots of the plant
The answer is A as during anaerobic respiration, as there is no oxygen, glucose is converted into ethanol and lactic acid to produce some energy.
