A) focal point is the correct awnser
Carbon dioxide is soluble so the extra would dissolve and prevent bad effects.
The answer is C. The ball and floor had friction between them causing the ball to stop rolling
Explanation:
Volume of cube= length x width x height
=2 x 3 x 4
=24cm^3
Density = mass/volume
=28/24
=1.166
=1.2g/cm^3