what can be painful and dangerous?
Brutal temperatures smoking cigarettes Pesticides ultraviolet light weathering hyperthyroidism nutrients oxygen
A B C D E F G H
Sunburns are painful and can be dangerous.
ultraviolet light can be painful and dangerous
what can be painful and dangerous? (A) Brutal temperatures (B) smoking cigarettes (C) Pesticides (D) ultraviolet light (E) weathering (F) hyperthyroidism (G) nutrients (H) oxygen