I think its B. Decrease cause If the Amount of greenhouse gases were reduced, then the temperature of the earth will cool
Invention I think which is B as they don't invent things in an enquiry
Answer:
the two vehicles will be moving at a speed of 6.16 m/s
Explanation:
This is a case of completely inelastic collision, therefore, the conservation of momentum can be written as:

which given the information provided results into:

Its 1.0*10^-7M its considered a concentration because hydrogen ion is exactly equal to hydroxide ions produced by dissociation of water
Mass always stays the same therefore it can’t be c and d. Volume stays the same because she is not removing anything. Therefore it is a