The least amount of vertical change during the monthly tidal cycle occurs a. At the beginning of the month
b. At the end of the month
c. at the quarter moons
d. at the full moon

Describe how an electric generator works

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence