Answer:
needs more info to be answered could you state them down or put a pic
Explanation:
Answer:
O2 (oxygen)
Explanation:
Photosynthesis- the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:
cos it works on humans better i guess
Explanation:
The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere.
Answer:
3.
Explanation:
there are three things that make up any nucleus:
Protons
Neutrons
Electrons
The amount of each will very by what type of atom it is, but the things that make up a nucleus do not change when in the body.