Are composed of amino acids. a. nucleic acids b. lipids c. proteins d. bases e. carbohydrates

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Which is abiotic? a. tree sap b. insect c. sunlight d. wood table