The enamel is the strongest substance in our bodies mainly inside your mouth.
The answer is 88.86 g/mol
43g id say. Due to conservation of mass that is the only one that makes even slight sense. If you had more air react then the nail would heavier
Answer: Temperature before the increase in
was a few degrees lower than temperature after the increase.
Explanation:
According to Charle's Law which states that The volume of gas is directly proportional to the temperature of the gas, when pressure is kept constant.

(At constant Pressure)
With the increase in level
in atmosphere the increase in temperature of the atmosphere will be observed.
Hence, temperature before the increase in
was a few degrees lower than temperature after the increase.
Explanation:
I want to say either a or b because primary is based on the habitat and whatever happens after while secondary is the result to disturbance causing an effect