Read the passage below. It summarizes survey information.
The Global Youth Tobacco Survey asks youth to fill in the answers to several questions about their tobacco use. In
this survey conducted between 2000 and 2007, it was found that in youth ages 13-15, 12 percent of boys and 7
percent of girls reported smoking cigarettes. This information was shared and reported on the American Cancer
Society website. The information was then used by several industries in the fields of health care, insurance, and
education.
What is a reason that these data may be unreliable?

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.