B. thick atmosphere
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Vertebrates have back bones or spines that give there body support.
Answer:
Alright, sure thing.
Explanation:
a. Nucleoid- The nucleoid (meaning nucleus-like) is an irregularly-shaped region within the cell of a prokaryote that contains all or most of the genetic material.
b. Mesosomes- Mesosomes or chondrioids are folded invaginations in the plasma membrane of bacteria that are produced by the chemical fixation techniques used to prepare samples for electron microscopy.
d. Capsid- A capsid is the protein shell of a virus, enclosing its genetic material.
e. Plasmalemma- The cell membrane is a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment.
Explanation:
If water did not expand when freezing, then it would be denser than liquid water when it froze; therefore it would sink and fill lakes or the ocean from bottom to top. Once the oceans filled with ice, life there would not be possible.
Your answer is b. cells come from cells :)
