Yellow-headed and red-winged blackbirds live in marshes. both species can nest in the emergent vegetation in the marsh. if both species are present, the red-winged blackbirds are pushed into the shallower, drier areas on the outer limits of the marsh. what niche are the red-winged blackbirds using when the yellow-headed blackbirds are in the marsh?
a. classical
b. fundamental
c. competitive
d. realized
e. ecological

The answer might be c

You should ease the seat belt back slightly and slowly

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .