Which one of the following supports the hypothesis that life has changed over time?
a.) prokaryotes has no nucleus

b.)fossils are distinct from rock layer to rock layer

c.)some fossils plants have deep roots

d.)the cell has no membrane

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Which three statements represent the benefits of performing experiments using computer simulations?