Aneeds a host to survive

This rapid change in species that rarely leaves behind fossil evidence is referred to as

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

If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate