The answer is 'The Biosphere.'
Only the strongest animals survive
Make sure you do not have any loose clothing and tie up your hair if you have long hair
<span>Living things are biotic factors like a dog, fungi and trees
I hope this helps!</span>
Answer:
Pb has an atomic mass of 82. If an atom of that element has an atomic mass of 80, that atom is known as: an isotope.
