PLEASE HELP ! A researcher from a pet food manufacturer places multiple bowls of its several flavors of
dog food in a room with 20 dogs. The researcher records which foods the dogs eat.
Determine whether this describes a survey, an observational study, or an experiment

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.