It is natural selection, as basically the environment causes a selection for those who have better adaptations to survive
I would answer muscle because muscles are bones that are strong and may break but its nearly inpossible.. ao i think muscles and musclea are the moat important thing because they help you so the stuff you do everyday
<u>Answer</u>:
Smaller planets would dissipate heat more rapidly and this criteria doesn't satisfy the conditions of existence of life.
<u>Explanation</u>:
The existence of life on Earth was possible because it fulfilled the criteria needed for the conditions of generating life in a planet. Its distance from sun is appropriate, it is made up of rock, it is big enough to have a core which is molten and it has a magnetic field. If it was a smaller planet, then it would have a liquid hot core that dissipate heat at a rapid rate. This condition doesn't support the criteria of life's existence.
