Cathode rays is the answer
It is not important not to mix R-22 and R-401A refrigerants in the same container because:
d. they use different oil.
The Freon in both systems are essentially the same but the oils in each system are not compatible which will render the mixture of the two systems useless.
B because the gases released by fire affects the air and removes oxygen
Answer:
Carbon cycle is also important for the survival of life on earth.
Explanation:
In carbon cycle, carbondioxide gas is present in the atmosphere. This carbondioxide gas is taken inside by the plant body through stomata and made food from it. When this food is eaten by animals, this carbon is transferred to their bodies. During breathing, carbondioxide gas is removed from animal body and the carbondioxide gas again goes to the atmosphere.