What do you know about healthy relationship true or false

What are similarities and differences between refraction, reflection, diffraction and absorption?

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

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?