PLEASE HELP WILL GIVE BRAINLIEST Why are rattlesnakes necessary to the balance of life in a forest?
A.)They eat insects which and are then eaten by raptors.
B.)They compete with raptors for the same food source.
C.)They eat rodents and are eaten by owls and hawks.
D.)They are not useful to the balance of life and are dangerous to humans.

Aproton is projected into a uniform electric field that points vertically upward and has magnitude e. the initial velocity of the proton has a magnitude v0 and is directed at an angle a below the horizontal. (a) find the maximum distance hmax that the proton descends vertically below its initial elevation. you can ignore gravitational forces. (b) after what horizontal distance d does the proton return to its original elevation? (c) sketch the trajectory of the proton. (d) find the numerical values of hmax and dife = 500 n> c, v0 = 4.00 * 105 m> s, anda = 30.0°.