Research findings that indicate differences between older and younger adults with issues such as memory, attentional capacity, and processing speed must be interpreted carefully. Why?

Because these generalizations can generate misconceptions in the citizen of the community, making believe that older people are unable to perform certain jobs in our society and can promote their exclusion. It is important to particularize each medical case and understand that a healthy and exercised life at the mental level is what guarantees a good memory and processing capacity.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

the right option is; decreased genetic variation  

decreased genetic variation describes the effect of this environmental change.

genetic variation is the naturally occurring genetic diversities or differences between organisms of the same species in a population. genetic variation allows the survival and adaptability of a species when they encounter changing environmental conditions. when an endangered species reduces, it loses genetic variation which may not be restored even if the species rebound and will only be recovered through the gradual collection of mutations over many years.