Which of the following characteristics were not included in John Dalton's description of the atom? A. In any element, all the atoms are the same.
B. Atoms are smaller than quarks.
C. All matter is made up of atoms.
D. Atoms exist only on Earth.
E. Elements in a compound are always in a constant ratio.​

Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?