valuable ore deposits and gem crystals are often associated with a. oceansb. oil depositsc. thin crustal areasd. igneous intrusionswhich of the following shows a possible sequence that leads to the formation of sedimentary rocks? a. squeezing, heating, bending, foldingb. rising, weathering, erosionc. weathering deposition, compaction, cementationd. melting, cooling, crystallizationplz : )

For the first question:
Valuable ore deposits and gem crystals are often associated with igneous intrusions. So for this question the correct option is option “d”. An example like the Pegmatite’s, which are a form of igneous intrusions, is responsible for the creation of variety of gems like topaz and tourmaline.
For the second question:
For this specific question, option “c” seems to be the correct option. Weathering, deposition, compaction, cementation are the possible sequence that leads to the formation of sedimentary rocks.

Hydrogen is the most abundant element on the periodic table..hope it .