Mass wasting occurs when.

sediment and rock moves from a higher elevation to a lower elevation

Mass wasting occurs when sediment and rock moves from a higher elevation to a lower elevation.

Explanation: Mass wasting is also called slope movement or mass movement. It involves the large movement of rock, soil and debris downward due to the force of gravity. During the process sand, soil, and rocks move down slope as a solid, continuous or discontinuous due to the force of gravity. It may be caused increased slope steepness, increased water, decreased vegetation and earthquakes

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms