Environmental Science
An association between two individuals or populations where both are benefitted and where neither can survive without the other is

mutualism
commensalism
competition
protocoperation

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
Our seasons are caused by:

All of these
The length of the daylight hours
The angle at which sunlight reaches the earth
Only (b) and (c) are correct
The changing distance between the earth and the sun

ANSWER DOWNLOAD EXAMIANS APP