The correct answer to this open question is the following.
Although there are no options attached, we can say that when Derek writes his autobiography, he can just concentrate on recalling the events he experienced in the past, without thinking about the keystrokes he needs to hit. He uses explicit memory in recalling the past events, and implicit memory in hitting the right keystroke.
Scholars consider that you use explicit memory when people have to make a conscious effort to remember something. For instance, if you try to remember your friend's names from elementary school, you have to use explicit memory to make an effort and try to name some of your friends at that time.
On the other hand, when data, names, figures, or any information comes up easily to your mind, then it is said that you use your implicit memory. Ideas and memories easily come to your mind.
The definition of environmental deterioration is the deterioration of a the environment through depletion of resources
Such as
Air, water, and soil
At the time of World War I, the US Army was small compared with the mobilized armies of the European powers. As late as 1914, the Regular Army had under 100,000 men, while the National Guard (the organized militias of the states) numbered around 115,000. The National Defense Act of 1916 authorized the growth of the Army to 165,000 and the National Guard to 450,000 by 1921, but by 1917 the Army had only expanded to around 121,000, with the National Guard numbering 181,000.
