When fission or fusion happens, what can be created?
a. energy
b. new elements
c. neutrons and other particles
d. all of these can be created during fission or fusion reactions.

What’s #16 asking and how do i solve it?

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".

Explain what will happen if decomposers were apsent from a forest ecoysystem.