In nature individuals with successful traits pass on these trails to the next generation but unsuccessful traits are eliminated. what is the process called? (a)artificial (b)natural selection (c) sexual reproduction (d)genetic engineering

its going to be mutualism cuz they both benefit from the relationship.

~batmans wife dun dun

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.