What is a reactant? A- Solid particles that have been separated from a solution

B- A substance that has the ability to be dissolved by a solvent

C- A mixture in which a solid and a liquid or two liquids are mixed occurs

D- The substance present before a chemical reaction occurs

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature

What are the chemical names of these compounds? ke: mg3n2: reset next