Can you help me please..

Ineed with my science work! it’s due tomorrow!

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?