Answer:
the 3rd choice and ignore this stuff because brainly makes me write an answer with 20 letters for some reason
Answer:
Radon 222.
Explanation:
This is a chemically inert gas that is colourless and odourless but it is radioactive. It is produced by uranium in rock. From seeping through foundation, its accumulation can cause lung cancer. Also, as a radioactive gas, it can be also used to in hospitals to cure ailments which includes tumour , cancer and other diseases.
Answer: The main reason for the growth in demand for water is because of population growth
Answer:
Explanation:
We need to find the energy produced when Sun converts 1.7 kg of mass into energy. Einstein's mass energy relation is given by :
c is speed of light
So, energy produced is 
.
Answer:
HI I THINK RED IS THE IMPOSTER
Explanation:
