pesticides

"Pit row was abuzz with activity."

"The single-celled organism was studied by the biology students in their science class. "

"The scientist examined the sample and found a bacterium, a tiny cell without a nucleus, under the microscope. "

"My daughter's success in school is anything I'm proud of. "

"The scientist carefully examined the substance to determine its chemical composition. "

"My sister is very helpful, especially when it comes to organizing things. "

"The science lab contained a sample of sulfur. "

"The farmer planted corn in his fields every spring. "

"The children are eating lunch in the cafeteria. "

"The scientist studied the properties of the synthetic fiber. "

"Our shed has several insect infestions, including ants, yellowjackets, and wasps."

"Political dissent was brutally suppressed."