How do people affect the coastline in a social way

Industrial development has altered, disturbed and destroyed coastal ecosystems, including sensitive habitats. ... The main impacts on marine ecosystems are: disturbance and removal of benthic organisms, damage to spawning areas for fish, alteration of the seabed, destabilisation of shallow banks and increased erosion.

the correct answers are:

a - pacific plate;

it is the biggest oceanic tectonic plate. surrounded on all sides by continental tectonic plates, it is submerging and gradually becoming smaller and smaller.

b - north american plate;

huge continental plate, occupying big portion of the northern hemisphere.

c -eurasian plate;

alongside the north american plate, it is one of the two dominant continental plates in the northern hemisphere.

d - indian plate;

a small continental plate, that has been part of gondwanaland initially, but after the break up of it, moved towards northeast and pushed into the eurasian plate that was once part of laurasia.