Ninety-five percent of igneous rocks and metamorphic rocks are below
Earth's surface. Why is this true?

This is so cause ...

Igneous rocks are formed when the  molten material cools and hardens

and

Metamorphic rocks  form when they are subjected to high temperatures and the great pressure of the rock layers above it.

So most of these rocks are found beneath the earth''s crust

(I hope im right... this might not be the perfect answer... but this as close as I can get.. I hope it usefull  for u )

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

< 3

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.