How does the concentration of reactants affect the rate of a reaction

B

Explanation:

If the concentration is increased, there are more particles to collide with each other, increasing the rate of the reaction.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !