Answer:
Each component is in balance with the other components. As long as the components are in balance, the ecosystem can remain stable and healthy. Ecosystems may remain stable for many years if the different components are balanced.
You point to someone specific and shout, "you call 911!" Then start infant CPR.
(If you just yell call 911, many times everyone waits for someone else to do it. It is best to assign someone specifically to do it.)
Hope that helps.
Answer:
virus
Explanation:
Virus is the correct answer
Vitamin A deficiency is the leading cause of preventable blindness in children.
