The extinction of the dinosaurs occurred rapidly as a result of a single cataclysmic event

Indicate whether the statement is true or false.


ANS: F, over a 40,000 year period after an asteroid impact

Biology & Microbiology

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Which of the following microscope types would be least useful in viewing unstained living cells?

A. Phase contrast B. Interference C. Bright-field D. Dark-field

Biology & Microbiology

Why do species with large body sizes typically have lower population densities?

a. each large organism consumes more available resources b. there are not enough individuals to grow the population c. genetic diversity is low d. small organisms have more potential mates e. large organisms do not like living near one another

Biology & Microbiology

__________ are responsible for absorption and anchoring of a plant, while __________ are involved

in photosynthesis. a. Roots; leaves b. Stems; leaves c. Leaves; reproductive structures d. Reproductive structures; stems e. Roots; pollen

Biology & Microbiology

The potential capacity to produce offspring is called:a

life history traits. b. fitness. c. age structure. d. density. e. fecundity.

Biology & Microbiology