Climbing up the slope requires physical strength.

He has physical strength, so he can work for a long time.

Due to the impact of the new coronavirus, the number of patients has risen to 3,000.

Climbing the mountain every morning is my daily routine.

Your cooperation is needed for this project.

I need you.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.