Which of these is a base? a. vinegar b. naoh c. hcl d. hno3 urgent

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

There are only about 250,000 known fossil species. true or false

Wich is not standing in the way of astronomers getting a good view of different star