Which of the following best describes farming in the United States by 1850? By 1850, farming had become more productive and less difficult. By 1850, farming had become less productive and more difficult. By 1850, farming was centered exclusively in the South. By 1850, farming was centered exclusively in the Midwest.

Nathan is an ecologist. he’s studying the effect of secondary consumers on primary consumers. his current research focuses on a population of blue jays and crows. they eat caterpillars and mice. if the number of blue jays increases, what are the likely effects on other populations? 1the number of crows will increase. 2the number of mice will decrease. 3the number of mice will remain the same. 4the number of caterpillars will decrease.

Acheetah ran 75 meters at a speed of 25 meters per second. how long was the cheetah running? 3 seconds 5 seconds 30 seconds 50 seconds

The point on the celestial sphere directly above an observer's head is called the