Smoking reduces a person's life span by an average of
a.
the number of tobacco users has increased.
b.
the number of tobacco users has decreased.
c.
the number of tobacco users has not changed.
d.
the number of adolescent tobacco users decreased, while the number of adult users increased

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?

In some flowers there are two alleles for color, and these can both be expressed equally at the same time. which best describes this trait? a. dominant b. sex-linked. c. codominant d. asexual

All of the following are purposes of committees except : a. committees to ease the work load within congress b. committees serve as the eyes and ears of the president when a bill is being approved c. committees allow lawmakers to listen to supporters and opponents of bills d. committees the public to learn about key problems and issues that face the nation