I believe its true, after all earth sciences are on a scale to which we cannot move them therefore we need to create models
The correct answer for the question that is being presented above is this one: "Requires large quantities." Advantages of using chemical agents for terrorist activities include all of the following except:<span>Requires large quantities.</span>
A solid product called a may form when chemicals in two liquids react, as shown in the photograph below. ... The photo- graph below shows an example in which carbon dioxide gas<span> is </span>produced<span> by a chemical </span>reaction. Temperature Change Most chemicalreactions<span> involve a temperature. change.</span>