Select all that apply.
which of the following are not abundant elements in the body?
a) hydrogen
b) boron
c) copper
d) oxygen
e) nitrogen

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?