The answer would have to be radiation because the air cools us off most times by moving around the radiation to cool it off. If there was no air to cool of the radiation from the sun, we would burn up, but then of course there are atmospheres.
Answer:
a mucus or a gelatinous sheath
Explanation:
Most species of cyanobacteria are enclosed in a gelatinous sheath which is made up of proteins.
Answer:
The respiratory system and the circulatory.
Explanation:
The respiratory system brings in the oxygen and the circulatory system brings all of the oxygen through out the body.
