Which selection from the article highlights a substance that has reached a boiling point? (A) This happens when a substance is cooled or heated to a particular point.
(B) For example, heat causes liquid water to evaporate, or turn into water vapor - a gas.
(C) That same temperature can be considered the melting point if the temperature is increasing and causes
a solid to become a liquid.
(D) For example, certain metals turn to rust if they sit out in the rain, and paper and wood burn to ashes if
they touch a flame.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

in addition to spreading humanist ideas, erasmus has contributed to criticism of corruption in the church.