He decides to do an experiment to test what type of food will make his chickens fatter . before the experiment, the chickens weigh an average of 5 pounds . david makes two groups of chickens . he feeds group a rice everyday, and feeds group b corn everyday. after one month, david weighs the chickens to see if they gained any weight . group a weighs an average of 5 pounds and group b weighs an average of 7 pounds.

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it