Metals and nonmetals generally form ionic bonds with each other. Which of the following sets of elements will most likely form an ionic bond? A. Na, F
B. Cl, F
C. Na, K
D. He, O

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What are the pros and cons of transect sampling?

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing