An Arctic community affects the tundra ecosystem by
A. the amount of waste it produces.
B. the amount of oxygen it uses.
C. All answers are correct.
D. the amount of sunlight it captures for photosynthesis.
E. the amount of habitat space it requires.
Ans: C. All answers are correct.
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The morphology of plants is determined
A. by cell division at the tip of the shoots and cell elongation at the tip of the roots B. by cell division at the tip of the roots and cell elongation at the tip of the shoots C. by cell elongation at both the tip of the shoots and the roots D. by cell death (apoptosis) along the radial axis E. by cell division at both the tip of the shoots and the roots
Which of these fatty acids is most likely to be a liquid at room temperature?
a. stearic acid
b. trans oleic acid
c. cis oleic acid
d. both oleic acids
When infecting host plants, Glomeromycetes form specialized flat hyphae called ________ that enable penetration and subsequent reproduction within the host.
Fill in the blank(s) with the appropriate word(s).
Birds typically have a large sternum with a bladelike vertical protrusion to which flight muscles attach called:
A. Radius B. Ulna C. Breastbone D. Keel E. Humerus