Which biome is characterized by hot days, cold nights, cacti, and sagebrush?

A) desert
B) tundra
C) savanna grassland
D) prairie grassland
E) chaparral

Without a properly functioning large intestine a person will have chronic diarrhea.

Cold, fast-moving freshwater holds ____ than still, warm water.

A) more oxygen
B) less oxygen
C) more carbon dioxide
D) fewer nutrients
E) more nutrients

Tympanic membrane

A) Eardrum
B) Part of the ear that contains the organ of hearing
C) Includes the pinna and external auditory canal
D) Fleshy portion of the external ear
E) Air-filled space within the temporal bone

To avoid social dumping, the U.S. and Europe are forcing other countries to adopt principles of fair trade.

Which of the following statements about the femur is TRUE?

A) The head of the femur articulates with the tibia.
B) The medial condyle articulates with the acetabulum.
C) Both the greater and lesser trochanters are attachment sites for muscles.
D) The distal end of the tibia articulates with the femur.
E) The proximal end of the femur articulates with the tibia.

conifers

A) have rhizoids, cuticle, and protected embryo sporophyte; no xylem
B) produce fruit
C) nonseed-bearing, heart-shaped gametophytes; spore-bearing leaves with sori
D) Lycopodium; cone-bearing sporophyte; free-living gametophyte
E) gymnosperm; only one species left
F) pine and redwood; mostly evergreen
G) confined to tropics or warm, temperate zones; resemble squat cone-bearing palm trees
H) flowering plant with two seed leaves
I) flowering plant with only one seed leaf