How do scientist learn about the mantle and core of the earth

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.