Some combination of heat production and warm clothing are necessary to maintain body temperature when ambient temperatures are less than:
What will be an ideal response?
60 degrees F
Biology & Microbiology
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The deposits of the following phytoplankton are used commercially in polishes and filtering devices:
a. dinoflagellates. b. foraminiferans. c. coccolithophores. d. diatoms. e. radiolarians.
Biology & Microbiology
Nitrate and ammonium are usable forms of nitrogen that plants absorb with their
A. roots. B. stomata. C. roots and leaves. D. leaves. E. stomata and leaves.
Biology & Microbiology
The variable phenotypic expression shown in camptodactyly results from the interaction of ____________________
and ________________factors Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
These enzymes have the ability to cut DNA at places where specific sequences of nucleotides occur.
A. restriction B. ligases C. helicases D. polymerases
Biology & Microbiology