Fill the blacks: ice is but has___ hydrogen bonds than liquid water A- more dense- less
B- none of the thiss
C- less dense- less
D- more dense - less
E- less dense - more

Which element provides strength to the exoskeleton of clams and oysters

Apopulation has 1000 individuals. over a period of 1 year, 500 newindividuals are born. which equation shows how to calculate the birthrate ofthis population? a. 500 - 1000 = 0.5b. 1000 x 0.5 = 500c. 1000 - 500 = 2d. 1000 + 500 = 1500

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.