Answer:
D
Explanation:
Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter. Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons
Answer:
A protozoa is animal-like
Explanation:
They share some traits of animals, they eat things outside of themselves.
Answer: PCR allows us to target and amplify one specific segment of DNA that is a few hundred base pairs in length out a complete genome of over 3 billion base pairs.
Explanation:
The answer to the question "When a part rusts is becomes heavier or lighter?" is the rust actually has a tendency to flake off. But as long as the rust is still on the nail, the nail will be heavier. The reason is that you are actually adding an oxygen and hydrogen to the nail.
