Courageous and determined
The lines are explaining how even though our hearts are beating, they are beating us all the way to the grave. The heart beat is compared to the rhythm of a funeral march with everyone stepping in time. The lines are showing hearts are beating courageously and with determination all the way to the person's death, which is inevitable.
Meteorologist
They literally studied weather forecasts so they would definitely play a role in it.
It really depends on the word. Overall, it serves as a description for the root word.
Answer:
you said the right answer lol
it is true :)