Why do the ponds of water dry up in the dry season

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)

Explain that newton first law, second law and third law of motion?

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?