Lamarck developed the theory of acquired characteristics that organisms changed during their lifetime to accommodate their environment and that these acquired characteristics became inherited in their offspring. This theory was preceded for example by Erasmus Darwin who believed that "improvements" to organisms could be passed on or inherited.
At low temperatures, gas particles have less kinetic energy, and therefore move more slowly; at slower speeds, they are much more likely to interact (attracting or repelling one another) upon collision
