HEL PLEASE 25 POINTS (6th grade question) idk why it says high school

Which landform change due to destructive processes is most easily controlled by human intervention?

A) coastal erosion
B) erosion by glaciers
C) volcanic deposition of lava
D) surface movement in earthquakes

costal erosion, A

Explanation:

have a great day :)

The answer is C) volcanic deposition of lava

Explanation:

it is right

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

idk i’m struggling too