Viruses only attack certain kinds of cells. in other words, they are specific. this is due to

a
their size
b
their reproduction
c
the shape of receptors on their outer covering
d
a, b and c are all correct

Abanana plant produces rhizomes, which are involved in

One gene can influence trait(s). one trait can be determined by gene(s).

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen