The correct answer is: humans and bacteria share a common genetic code.
This could be a valid scientific hypothesis because it is testable.
To be valid scientific hypothesis it has to has to be something that can be supported or refuted through experiments or observation.
Answer:
Your answer is 5
Explanation:
Five types of histones have been identified: H1 (or H5), H2A, H2B, H3 and H4. Hope this helped :)
More nitrogen in the atmosphere leads to NITRIC ACID RAIN.
When nitrogenous fertilizers are used on the farm, some gases are released into the atmosphere including nitric oxide. These gases rises up into the atmosphere, mix with rainfall.
Nitric oxide react with rainfall to form nitric acid and it falls as acidic rain.
