Which is more dangerous?
a. atrial fibrillation b. ventricular fibrillation
B
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What are the products of the light-dependent reactions of photosynthesis?
a. ADP, NADP+, and sugars b. ADP, NADP+, and O2 c. include ATP, NADPH and O2. d. ATP, NADPH, and CO2 e. ATP, NADPH, and sugars
An example of an excavate that has a pellicle is Euglena
__________________ Indicate whether the statement is true or false.
Surface and aquifer freshwater sources hold what percent of the Earth's total water?
A) 2% B) more than 97% C) 10-12% D) less than 1% E) 20%
In countries where the number of children younger than 15 is approximately equal to the number between ages 15 and 45, the population is
A) shrinking slightly. B) growing exponentially. C) stable. D) declining drastically. E) expanding slowly.