Which is NOT a way nitrogen can be fixed or made more useful?

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?