Select the correct answer.
A compound has an empirical formula of G2H5. What is true about this empirical formula
A
It models the structure of the compound.
B.
it shows the ratio of elements in the compound.
C
it gives the mass of each atom in the compound.
D. it indicates the number of atoms in the compound.
E
It describes only this one compound.

Smog is the term used to describe the combination of fog and smoke

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Which of the following best describes the formation of plasma?