Which of the following groups of elements are in the main group?

A. Alkali metals
B. Halogens
C. Nonmetals
D. Transition elements

Does this organism still meet the definition of a eukaryote ? why or why not?

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly