In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
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Question: Users roll the ball to position the on-screen pointer , using their thumb , fingers , or commonly the palm of the hand while using the fingertips to press the mouse buttons .

Answer: The user rolls the ball with the thumb , fingers or the palm of the hand to move a cursor .


Question: The earliest clear statement of how chromosomes may spread in a population not because of their positive fitness effects on the individual organism , but because of their own " parasitic " nature came from the Swedish botanist and cytogeneticist Gunnar O ̈ stergren in 1945 .

Answer: The Swedish botanist and cytogeneticist Gunnar O ̈ stergren in 1945 noted how chromosomes may spread in a population because of their own ” parasitic ” nature .


Question: In technical terms , the dew point is the temperature at which the water vapor in a sample of air at constant barometric pressure condenses into liquid water at the same rate at which it evaporates .

Answer:
The dew point is the temperature where water vapor condenses into liquid water .