Rocks are abiotic
(Soil?) is made of both abiotic and biotic materials
Sea shells are biotic
As you move down a group, atomic radius increases
Answer:
a
a process that selects variations to help with survi al and that spreads the variation to more offspring
Explanation:
the weak don't survive the strong thrive
The radiation from the sun
Answer: HORMONES
Hope this is correct :-)
