Identify the type of reaction (combustion, synthesis, decomposition, single replacement, or double replacement) this equation represents. CH4 + O2  CO2 + H2O

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Select the correct answer. what does the process of natural selection involve?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?