It is covered in skin.
This skin excretes a mucous layer which keeps it moist and also acts in protecting the animal from pollutants.
1. Early earth had no ozone layer, which means it was most likely extremely hot.
2. Young earth had no oxygen and life needs oxygen in order to survive.
3. There where so many natural disasters happening all the time, like volcanic eruptions and constant impact with meteorites and asteroids.
-Extra one (4. Earth originally had no ocean and water. Oceans eventually formed from the water vapor released from the volcanic eruptions, but before that there was nothing.)
Answer:
<em>the answer is chemical property since acid is involved.</em>
Answer:
Boundary of the heliosphere
Explanation:
It is the spherical region around the sun that is filled with solar magnetic fields.The shape of the heliopause fluctuates an is influenced by a wind of interstellar gas caused by the suns motion through space.
Answer:
C. conduction
Explanation:
Conduction is the transfer of heat between objects in contact with each other as a result of molecular action. Conduction occurs within and between all states of matter.
