I believe the answer is A.
I believe it is A (Adenine)
Answer:
Animals in the same order are similar evolutionarily, but are still very different species.
Explanation:
Animals in the same order have a common evolutionary ancestor that may give them similar traits, but the species can still be very different with morphologies.
The first option is the correct answer, Troposphere.
An age-related change in the nervous system that can adversely affect nutritional status is decreased taste perception, hearing loss and vision loss. Aging refers to a multidimensional process in humans, the process of physical, and psychological, and social changes. As a population, older adults are more prone to age-related diseases, functional impairment, and physical inability that nay interfere with the maintenance of a good nutritional status.