What is the main difference between muscle cells and nerve cells?
a. they use different genetic codes
b. they have different ribosomes
c. they contain different genes
d. they express different genes

Did you know that a blue wales tongue weighs more than an elephant?

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.