You can use process of elimination here. The atmosphere is a key component for the air we breathe. The atmosphere protects us from harmful objects and rays. Finally, warm air has more moisture in it than cool air (for example why generally hot places are so humid).
The answer to the question above is PANGAEA. Pangaea or Pangea is known to be a "supercontinent" that existed during the periods of late Paleozoic era and earlier in the <span>Mesozoic era. This supercontinent was really large and this is the original landmass of the present continents today. This broke up due to plate tectonics.</span>
The release by volcanism of gases that had been trapped in a planetary interior
Vegetative Propagation.
Vegetative propagation is technique through which plants reproduction takes place in an asexual way. This is usually done by cutting a stem of a plant and to reproduce another plant from the existing one. This can also be done via sexual means.
The advantages of growing of fruits and vegetables by using vegetative propagation are many. The biggest benefit is if we have a plant of a desirable trait, that same plant can be used again and again to reproduce fruits and vegetables. Vegetative propagation is also treated as cloning method.
