To observe a leaf or skin cell, you would use... a compound light microscope
a dissecting microscope
a scanning electron microscope
a transmission electron microscope

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Which animal is a producer in this ecosystem

Which of these is not a nucleotide base found in dna?