A molecule that is a component of a ribosome is
A. DNA.
B. tRNA.
C. mRNA.
D. rRNA.
D. rRNA.
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As early organisms evolved the ability to harness energy from the sun, other organisms began to die out because they were ____
a. destroyed by a meteorite b. outcompeted by multi-celled organisms c. consumed by dinosaurs d. poisoned by oxygen gas e. starved
Explain the structure and function of the fontanels in an infant. At what age do they disappear?
What will be an ideal response?
Pasteurization is an example of what kind of technique?
A) antiseptic B) disinfection C) sterilization D) surgical aseptic
Deforestation in the boreal forests is due primarily to:
a. commercial logging for rare woods to be used in furniture. b. commercial logging subsistance agriculture. c. clear-cut logging for industrial wood. d. slash-and-burn agriculture for farming e. slash-and-burn agriculture for cattle ranching