Which of the following is true about animals? A. All animals are single-celled. B. All animals have complex organ systems. C. All animals are consumers. D. All animals are producers.

What is the mrna strand that would be copied from this dna strand

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?