Anne read an article about a girl who feed antibotics to chickens. the chickens there were fed the antibotics grew at a faster rate then those who were not fed them. Anne is making an experiment silmair to that but she is using 144 crayfish. Crayfish have a maximaun growth of 10.00cm she put them in the same kind of tanks, gave them the same food, temp, water and everything except that some of them got antoboics and some didnt. She left them for six weeks.

1. Is this a controlled experiment? Support your anser with details from the info above

2.Name Any practical value that could be taken from an experiment such as annes.

please put it in small understanable words.