Which lymphatic structure is most active during the youth years? Select one:
a. Tonsils
b. Spleen
c. Lymph nodes
d. Thymus gland

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

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?