The C4 photosynthetic pathway is most common in
A) gymnosperm trees.
B) angiosperm trees.
C) algae, bryophytes, and ferns.
D) grasses and shrubs in warm and dry climates.
D
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Imagine two species of birds with similar beak sizes and diets. Where the two species are allopatric, we would expect that their beak sizes
A. should be more different than when sympatric. B. should be more similar than when sympatric. C. should be larger than when sympatric. D. should be smaller than when sympatric. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about character displacement? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The act of nursing stimulates the contraction of smooth muscle cells in the breast. If a newborn infant is unable to nurse, then
A. progesterone secretion is not inhibited. B. milk is not produced. C. oxytocin is not secreted. D. prolactin is not secreted. E. prostaglandins are not secreted.
Which organism may be implicated in arteriosclerosis?
A. Escherichia coli B. Pseudomonas aeruginosa C. Staphylococcus aureus D. Chlamydia pneumoniae
Each infectious droplet expelled during sneezing is approximately ________ µm in diameter and may contain one or several infectious microorganisms
a. 100 b. 100 c. 10 d. 1