6.6(C) Minerals can be identified using hardness, streak, and cleavage because minerals are inorganic. crystal structure is too hard to determine. crystal size is determined by the environment. minerals have different recognizable properties.

Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force

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.

It takes longer to fly an airplane against a with it