Which would be most likely to be fossilized?
A. a common thick-shelled crustacean.
B. a common large worm.
C. an herbaceous plant that is only found at very high altitudes.
D. a rare, desert-dwelling lizard.
Answer: A
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The increase in the concentration of toxicants up the food chain is called:
a. bioaccumulation. b. biological magnification. c. detoxification. d. organic magnification. e. none of the above.
Respond to statements 115–119 in reference to the five
endocrine glands listed below. a. pituitary b. adrenal c. pancreas d. thyroid e. thymus M 115. This gland is the target for corticotropin (ACTH). E 116. Oxytocin is released from this gland. M 117. Antidiuretic hormone is released from this gland. M 118. This gland produces a hormone that directly controls development and helps control metabolic rate. E 119. Insulin is produced in this gland.
The longest wavelength of visible sunlight is:
a. Blue b. Violet c. Red d. Yellow
Which type of molecule is most abundant in a typical cell?
A) Carbohydrate B) Nucleic acids C) Water D) Lipid E) Protein