Question

It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain. 1

Answer 1

green leaves has moisture in it whereas dry leaves doesn't have moisture in it.
this helps the dry leaves to catch fire more easily while in green leaves it would take a lot of time in evaporating the moisture in it and then start burning

Answer 2

Answer:

$\huge\underline\blue{Answer:-}$

Green leaves contain moisture, so they do not fire. Dry leaves do not contain moisture, so they catch fire easily. Moisture increases the ignition temperature of leaves.