Typically, nitrogen atoms are composed of seven electrons, seven protons, and seven
neutrons. an isotope of nitrogen could
a. be negatively charged.
b. have more than seven electrons and more than seven protons.
c. have more than seven protons.
d. have more than seven neutrons.

d. have more than seven neutrons.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

i am positive it is c. condensing but i may be wrong