Compare the mechanism of ATP production in photosynthesis and cellular respiration (aerobic and anaerobic). State the differences and similarities.

What did hunter gathers do to alter the environment?

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?

Which kind of mutation has occurred when the codon for an amino acid is changed to a stop codon? a. a silent mutation b. a missense mutation c. a frameshift mutation d. a nonsense mutation