This is a diagram of fossils found in the same area. Jamie wanted to know which layer of fossils is the oldest, so he asked his mom. Which layer of fossils did Jamie's mom tell him was the oldest?
A)
Layer 1
B)
Layer 2
C)
Layer 3
D)
Layer 4

What is the number of atoms in 3.54 mol s

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

What are the two largest greenhouse gases