{100 POINTS!! GIVE EXPLANATION} As the major constituent in seawater, the measure of ions present is typically used to determine the concentration of other conservative elements in seawater.

A. sodium
B. magnesium
C. chloride
D. calcium

What type of cell is produced after fertilization occurs and the gametes combines ?

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

In which situations is the principle of cross-cutting relationship useful in determining relative age?