Asafety precaution for field investigations is to ( science )
a : wear lab goggles and aprons
b : go into the field alone
c : keep your investigations secret
d : be prepared and use common sense

Each eukaryotic cell has a plasma membrane, cytoplasm, a nucleus, ribosomes, mitochondria, peroxisomes, and in some, vacuoles; however, there are some striking differences between animal and plant cells.

A