How do the oxygen (O2) and carbon dioxide (CO2) levels change over time? What is always true about the total amount of O2 and CO2 in the test tube?
What happens when the CO2 reaches zero?

2. if someone had the list of traits you provided in question 1, do you think he or she would be able to find you in a group of 1000 people? why or why not? if not, what other information encoded in your genes might distinguish you from the others in the group? what are other traits that are encoded for by dna?

Find the mass of the cone using the triple beam balance. a. 543.0 g b. 542.0 g c. 504.28 g d. 502.8 g select the best answer from the choices provided a b c d

How are fossils used to date organisms?