In what types of rocks are fossils most likely to be found?
A. igneous, formed by lava flow
B. conglomerate
C. sedimentary
D. metamorphic
C
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Keratins are considered to be obligate heterodimers in that the dimers forming their filaments must contain one __________ and one __________ subunit?
Fill in the blank(s) with the appropriate word(s).
Which gas is increasing in the atmosphere and
intensifying the greenhouse effect? a. carbon dioxide b. carbon monoxide c. ozone d. nitrogen e. oxygen
Which of these statements can be logically inferred from the amount of DNA shared by chimpanzees and humans?
A) Humans and chimpanzees share a relatively recent common ancestor. B) Humans evolved from chimpanzees. C) Humans are unique and different from all other life forms. D) Humans are a more complex life form than chimpanzees.
During rest and light activities, fatty acids are the main fuel for _______________.
Fill in the blank(s) with the appropriate word(s).