The body naturally relaxes between 12: 00-1: 00
a. m. and 4: 00-5: 00
a. m. this is referred to as our
sleep schedule
rem cycle
celestial pattern
circadian rhythm

Which of the following is an example of a non-falsifiable hypothesis? a. there is a teacup orbiting the milky way galaxy. b. there is no life on mars. c. the human species started in africa. d. humans cannot live without the amino acid methionine

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?