Why are polar bears listed as threatened species?

a. the ice they hunt from is melting
b. their numbers are rapidly declining
c. their prey is dying off
d. invasive species are hurting them

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

Which group of molecules are targeted by the kinases in order to control this movement

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false