Acyclist rode at an average speed of 15 mph for 30 miles. how long was the ride?
a) 2 hours
b) 1 hour
c) 0.5 hours
d) 3 hours

Which beat describes the brain stem

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna