Which is element number 10?

Please Help!!

Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas.

Neon is the element which is in serial number 10 in the periodic table.

Neon is one of the noble gases, i.e., they are stable (talking about NOBLE GASES)

explanation:

since this is put under health, i would define "ethical (medical) behavior" the way the oath for doctors is recited.   "first do no harm."

but the term in general means when given a choice between right and wrong, we should always choose right. if we do, then we are practicing ethical behavior.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.