What is the term used for a completed outer shell of eight outer shell

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

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

Which of the following terms describes all of the non-living components of an ecosystem