Answer:
Level 4
Explanation:
Level 1 is an individual, Level 2 is a population, Level 3 is a community, and Level 4 is an ecosystem.
C. Tara takes an asprin and her headache goes away, when she does a good behavior the bad is taken away which enforces her to take asprin again next time her head hurts
Answer:
October 21, 2012, St. Peter's Basilica, Vatican City by Pope Benedict XVI
Explanation:
Answer:
See attachment.
Explanation:
The given function is 
This function is of the form
where 0<b<1
This is an exponential decay function.
To see it clearly, we rewrite this function to get:

This graph will be asymptotic to the x-axis as x-values approaches positive infinity.
The y-intercept is at (0,1).
The graph is shown in the attachment
Answer:
by mutations in regulatory DNA over time