As the colorado plateau continues to rise, the colorado river cuts deeper and deeper into it; therefore, much of the grand canyon is
a. a primary landform
b. a secondary landform
c. a tertiary landform
d. not a landform, since canyons cannot be landforms

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question

answer///island,peninsula;