During a chemical reaction, 25g of a solid is reacted with 15g of a liquid. The reaction bubbles and produces a lot of gas. After the reaction is over a scientist weighs the solution and finds that it has a mass of 35g. What is the mass of the gas that was produced? A. 0g
B. 5g
C. 20g
D. 40g

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because