The largest outlet for petfoods in the United States is
A. Pet specialty stores
B. Commercial feed stores
C. Veterinary clinics
D. Grocery stores
E. Internet stores
Question 2
Frogs undergo metamorphosis. Most species begin life as tadpoles resembling fish. Tadpoles breathe through gills, have a two-chambered heart, no limbs, and a tail designed for swimming. During metamorphosis, which of the following changes occur?
A. The heart changes to a three-chambered organ
B. The gills are replaced by lungs
C. Limbs grow and the tail is resorbed
D. All of the above
E. A and B above
Cast of Isotelus rex, the largest known trilobite from the middle to upper Ordovician of North Ameri
The United States in the Caribbean and Central America
Gonorrhea Rates in the United States
Examples of low and high Entropy states
GDP per Capita in the United States, 1870–2009 (Ratio Scale)
GDP per Capita in the United States, the United Kingdom, and Japan, 1870–2009