How do the wavelength and frequency of the colors change as you move through the rainbow?

What is the measure of ∠m? 81° 65° 53° 98° answer plz

Explain how earth is like a giant bar magnet. how is our magnetic field made?

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.