The student observes a great blue heron catching fish near the edge of the pond. Based on the information the student collected, which blnd will compete with the great blue heron for the same hunting spots and similar prey? A. The mallard, because it hunts for fish while wading near the edge of the pond

B. The pied-billed grebe, because it dives in apen water to get crayfish on the bottom of the pond

C. The great egret, because it hunts in water near the edge of the pond for fish and other prey

D. None of these​

The great egret, because it hunts in water near the edge of the pond for fish and other prey

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.