Most dinosaurs became extinct
a. 10,000 years ago.
b. 1 million years ago.
c. 500 million years ago.
d. 65 million years ago.
e. 1 billion years ago.
D
Biology & Microbiology
You might also like to view...
A decrease in body temperature to ___ degrees
Celsius or below alters brain function.
a. 39 b. 38 c. 37 d. 36 e. 35
Biology & Microbiology
After the activation of a G-protein, the sequence of signaling events consists of:
Biology & Microbiology
A tracheid is:
A. a gametophyte cell B. a small branch of an insect trachea C. a seed-bearing stem D. a specialized vascular cell E. a reproductive chamber
Biology & Microbiology
Which component of cholesterol would classify it as a lipid?
A) carbohydrates B) phosphates C) glycerol D) hydrocarbons
Biology & Microbiology