A plant grows three inches in a month. Why is this a physical change? The size of the plant has changed.
The plant makes energy from the sun to grow the flower.
Heat of combustion from the sun helps grow the flower.
Special structures in the plant react with sunlight to make the flower.

Diamond will scratch quartz. true or false

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?

Explain what will happen if decomposers were apsent from a forest ecoysystem.