Which observation proves that a cell is a eukaryote?
a. it contains dna
b. it has dna inside a nucleus.
c. it has a cell membrane.
d. it contains ribosomes.

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.