One subcortical area that undergoes substantial neuron loss during aging is the

Basal forebrain region.

Explanation:

Aging is the natural process of getting older and all organisms has to undergo the process of aging. The shortening in the telomere length and reactive oxygen species is involved in the aging process.

The biochemical changes of the body get slows down and individual has low energy stored in their body. The neuron loss is common that result in the loss of memorizing power with aging. The neurons of the basal forebrain region gets destroyed during the aging process.

Thus, the answer is basal forebrain region.

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds