URGENT NEED NOW
when do volcanic hotspots occur??

High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes. As the tectonic plate moves over the stationary hot spot, the volcanoes are rafted away and new ones form in their place.

Explanation: hope this helped

d.) greenhouse gases

answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;