How is smoking most likely to negatively affect human health? A. by reducing the number of white blood cells
O
B. by producing antibodies
C. by causing mutations in genes
D. by creating more chromosomes in each individual cell

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending