The thermal capacity of water is due to the strong covalent bonds between the hydrogen and oxygen of a water molecule
Indicate whether the statement is true or false
F
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The most important stimulus in the control of respiration is the concentration in the blood and other body fluids of
(a) oxygen (O2). (b) carbon dioxide (CO2). (c) hydrogen ions (H+). (d) nitrogen (N2).
Flowers:
a. Are structures of plants that are only ornamental and have no reproductive value in plants b. Produce both pollen and egg cells c. Produce pollen only d. Produce egg cells only e. Are produced by both gymnosperms and angiosperms
Sara is 5 ft 4 in. tall and weighs 115 lb. Katy is 5 ft 10 in. tall and weighs 127 lb. They both have a BMI of 18.5. How can they have the same BMI? What is the value of knowing the BMI?
What will be an ideal response?
Tiktaalik appears to:
a) be a descendant of the one branch of ancestral horses that survived until today. b) be a "living fossil" since it resembles many of the earliest fish, yet populations thrive today. c) represent a transitional species, somewhere between fish and land animals. d) be an extinct species of fish that was also able to fly, due to flaps of skin between its fins. e) be an extinct species of giant fish that was subject to strong selection for smaller body size.