1. Which requires more work, using 500 N to carry a sack of rice up a 20 m high hill or using 200 N to carry a knapsack up a 50 m high hill? Why?

The roots adapt

Explanation:

The tissues of the roots which are the tissues that absorbs, the dermal tissue. If the system fails then the absorbtion of water and minerals needed for the plant to survive will end. But the roots are replaceable or should I say renewable. Just like a cut down "Malunggay" plant, several other stems sprout and grow on the surface of the stomp eventually.