What is one reason that invasive species such as the brown tree snake in Guam are often so successful in their new habitat?
A. They are better adapted to winter conditions.
B. They are unable to full partition existing resources.
C. Potential prey animals have evolved defenses against it.
D. The species has no natural predators to control it.
E. Such a species is typically a Batesian mimic.
D. The species has no natural predators to control it.
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Each nephron of the kidney consists of a long tubule and associated small blood vessels. Blood cells and plasma proteins are too large to enter with the glomerular filtrate. What is the correct path for the filtrate to follow through the nephron in the production of urine?
A. Bowman's capsule ? distal convoluted tubule ? loop of Henle ? proximal convoluted tubule ? collecting duct B. Bowman's capsule ? proximal convoluted tubule ? loop of Henle ? distal convoluted tubule ? collecting duct C. Bowman's capsule ? loop of Henle ? proximal convoluted tubule ? distal convoluted tubule ? collecting duct D. Bowman's capsule ? collecting duct ? proximal convoluted tubule ? loop of Henle ? distal convoluted tubule E. collecting duct ? proximal convoluted tubule ? loop of Henle ? distal convoluted tubule? Bowman's capsule
Sister chromatids detach from one another and become visibly separate chromosomes during _____
a. anaphase b. metaphase c. interphase d. prophase e. telophase
______ are toxins that act on the nervous system
Fill in the blank(s) with the appropriate word(s).
A nerve may be as long as
a. one inch. b. 12 inches. c. a few millimeters. d. 3 or 4 feet. e. one foot.