Why does prolonged exposure to uv light from the sun or tanning beds increase the risk of getting skin cancer

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Name the types of burns one can get and which structures of the integument are damaged

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus