What is the name for the two passages that conduct air into the lungs?

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.

Which characteristics are typical of a human population in the postindustrial stage?