Which group of animal is the closest related to reptiles? a: primates b: cetaceans c: marsupials s: monotremes

What is the name for a substance formed in a chemical reaction

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?