The answer to your question would be space. The sun's light travles through space. but if you clap, you can't hear it.
6co2+6h2o + energy , this are the reactants
The term apomorphy means a specialized or derived character state; plesiomorphy refers to a primitive or ancestral trait. An same as autapomorphy is a derived trait that is unique to one group, while a same as synapomorphy is a derived trait shared by two or more groups.
Scoville units is the scale used to determine how "hot" a pepper is.
A sweet bell pepper, which isn't spicy at all, has a ranking of 0.
The Carolina Reaper, one of the hottest peppers in the world, has a ranking of up to 2,200,000.