fissioned

"The nucleus of a helium atom contains two protons and two neutrons. "

"They identified a burst pipe as the cause of the flooding."

"The teacher bombarded the students with practice problems to help them prepare for the test. "

"He released his grasp on the lever."

"The train slowly underwent the tunnel. "

"A small group."

"The children's energy fueled their excitement for the school trip. "

"Nuclear power plants use uranium to generate electricity. "

"The scientist studied the effects of different types of soil on plant growth. "

"The amount of atmospheric pollution threatens a health crisis."

"The fission of the large project into two smaller tasks made the project manager's workload more manageable. "

"The release of the trapped students from the burning building was a joyous occasion. "