No fishes survive when the oxygen content of water falls below ___________________.
Fill in the blank(s) with the appropriate word(s).
4 parts per million
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The immature male gametophytes of angiosperms develop in ____ contained within ____
a. ovaries; carpels b. anthers; stigmas c. pollen grains; carpels d. pollen sacs; anthers e. stigmas; stamens
A membrane attack complex is part of the ____
a. adaptive immune system b. complement system c. B cell response d. T cell activation e. inflammatory response
Why do you NOT need to memorize the type of ion each atom tends to form
a) Because this information is spelled out in the periodic table. b) Because this is more science than the non-science major needs to know. c) Because this information is readily available on the Internet. d) Because the type of ion an atom forms depends on the environmental conditions.
In an "ideal" world, organisms that are fine-tuned for reproduction would ________
A) mature at birth B) produce high-quality offspring continuously and in high numbers C) live forever D) All of the above, taken together.