Physics is not a branch of natural "sciencie".
Answer: I think you meant scientists and scientists often gather new knowledge by studying the experiments of others
Explanation:
if there is a source of water and single celled organisms, life will be possible on that planet. The planet will need a atmosphere so 1. it will have its own gravity 2. and so that gas molecules ( including oxygen) will not be able to escape into space. the world population will be roughly 10.7 billion people so the planet will need to be spacious. A planet as described would be perfect if you take the right measures. if it has single celled organisms than its proven that it can and will sustain life. So, the planet has a water source, contains living organisms, is spacious, and has a atmosphere.
Deep brain stimulation (DBS) is a technique developed to treat neurological disorders through direct brain electrostimulation and presently used to treat severe Parkinson's Disease patients that suffer from extreme motor dysfunction (tremors) caused by the condition. The importance when electrically dealing with the brain is size and material used to make the needed electrodes
The answer would be C. On different chromosomes. I'm sorry I don't have an explanation, except for I just took the test and it said C. was the correct answer.
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