A collection of languages that share a common origin but have since evolved into individual languages is a
A) dialect.
B) language branch.
C) language family.
D) language group.
E) language root.
Question 2
A number of lakes in North America no longer have fish in them. One reason for this is:
A) carbon monoxide dissolves in the water and makes it toxic.
B) the hole in the ozone layer has allowed too much UV to penetrate the water.
C) acid rain has made the water more acidic, causing it dissolve toxic aluminum from the soil.
D) acid rain falling directly onto fish kills them instantly.
Acromegaly in one individual from a pair of identical twins.
Amazing NASA Pictures Collection
Models of some representative proteins drawn to a common scale
Common physiological changes with aging
Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources