The advantage of avian respiration over mammalian respiration is that _______________
a. there is a one way flow of air
b. they have spiracles to control airflow
c. they have air sacs that allow them to store oxygen
d. they do not need to ventilate their lungs
A
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The reducing agent during the Calvin cycle is:
A. NADPH. B. ATP. C. oxygen. D. NADH. E. FADH2.
You decide to plant a garden in your backyard. You dig up a strip of grass in a sunny spot. When you have finished digging up the grass, but you haven't planted anything, you have created a/an ______________ in the lawn
A. ecological disturbance B. new community C. Both responses are correct. D. None of the responses are correct.
A scientist could test how the traits of desert plants are adaptive by ____
a. transplanting individuals that have the trait into moister habitats b. selectively breeding individuals displaying that trait c. conducting straightforward experiments in the desert habitat d. crossing individuals in the desert with individuals in moister habitats e. comparing them to traits in related species from moister habitats
Copy number variants
A) are extremely rare, occurring in only about a dozen sites in the genome. B) are found only in even-numbered chromosomes. C) number in hundreds to thousands. D) are five or fewer bases long.