. A block of wood has a mass of 150 grams and a volume of 550 cm3. What is its density?

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a