Ecotourism measures ecosystem services such as carbon dioxide processing or water retention and
purification.
Indicate whether the statement is true or false.
ANS: F, Ecosystem valuation
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Because of the low penetration power of electrons, samples for transmission electron microscopy must be extremely thin. A(n) ________ is able to cut sections as thin as 20 nm.
Fill in the blank(s) with the appropriate word(s).
CO2 and H2O will not form glucose on their own
because a. CO2 does not contain sufficient energy. b. H2O does not contain sufficient energy. c. neither CO2 nor H2O contain sufficient energy. d. the concentration of CO2 is too low in the atmosphere. e. the bonds of CO2 and H2O are too stable to be broken without an input of energy.
Which of the following is incorrect concerning hemoglobin?
A. It is composed of 3 protein chain subunits. B. It never leaves red blood cells. C. It is made of amino acids. D. It can bind to nitric oxide. E. It is made inside red blood cells.
The gaining of electrons is referred to as ____
Fill in the blank with the appropriate word.