What led darwin to believe that organisms originate from a common ancestor?

Chicken pox and hepatitis are bacterial diseases. true or false?

What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?