Answer:
none of the above
Explanation:
these can all cause air pollution
1. The number of each electron in this shell determines how an atom combines with other atoms to form compounds.
2. The number of electrons in an atom's outermost valence shell governs its bonding behavior.
Answer: Do you have answer choices?
Explanation:
Answer: One way of creating a variation in a population is through genetic replication errors. This will make a new type of alleles. Environmental factors cause variation such as affecting enzyme activity and function. The changes would show in the phenotype of an organism.
Explanation: thus is one way ik for sure another way idk srry