A projectile is launched at an angle above the ground.

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

The different layers of gases that extend form the surface of the earth into space