An indicator species is an organism whose presence, absence or abundance reflects a specific environmental condition. Indicator species can signal a change in the biological condition of a particular ecosystem, and thus may be used as a proxy to diagnose the health of an ecosystem.
Answer:
Alzheimers is a disease that affects the main, it starts out gradually and causes memory loss, issues with speech, affects the ability to think clearly and affects the way a person moves.
Explanaton:
Answer:
B H I G F C N M D E M O K J A
this is the best i could do. sorry if some are wrong.
Explanation:
