Humans are an example of ____
a. bulk feeders
b. deposit feeders
c. fluid feeders
d. suspension feeders
e. bulk and fluid feeders
ANSWER: a
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In 1909, Charles Walcott discovered fossils in the Burgess Shale of the Canadian Rockies. The area was formed by an underwater mudslide that provided an oxygen free environment, so decomposition was minimal. Why was this site particularly important to the fossil record?
A. It contained fossils from the Cambrian period. B. It contained both vertebrate and invertebrate fossils. C. It contained fossils of well preserved soft tissues of invertebrates. D. It showed that mudslides could occur underwater. E. The first bird fossil, Archaeopteryx, was found here.
The ______ is photosynthetic and leaflike in many flowers
a. carpel b. stamen c. petal d. sepal e. stigma
Rock concerts and shotgun blasts can produce sounds at a level of
a. 100 decibels. b. 130 decibels. c. 200 decibels. d. 250 decibels. e. 300 decibels.
Angina pectoris is another name for a myocardial infarction
____________________ Indicate whether the statement is true or false.