Complete each sentence by putting a tick in the box next to the correct answer.
(i) the wind is
(a) a non-renewable energy source
(b) a constant energy source
(c) an unreliable energy source
which one is the correct answer

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

b.a device that inputs heat into a cool object

moisture is lackin, and organic acids are scarce.