What happens if neither plate goes down towards the mantle?

please give me brainlist and follow

Explanation:

This would cause mantle material to rise in its place, pushing up the crust and forming isolated mountain ranges and associated basins. This activity would cause minor earthquakes and maybe even additional pockets of volcanism.

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

the answer is b)3/8x+1