The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
Asteroids vary greatly in size and are mostly made up of frozen water and gas. This one is true.
They are said to be "mostly formed of ice and gas" as they rarely can be found consisting of stone, nickel and iron. These are extremely dangerous in our Universe.
Answer:
The prevailing wind direction is West, even though natural wind direction is East. The West winds prevail because they are much stronger. The way this works is that the San Francisco Bay water is a constant cool temperature (around 50-60 degrees).
Explanation:
They are made up of nitrogen bases,sugars,and a phosphate group
Answer: This evidence reveals what our planet was like long ago. Fossils also show how animals changed over time and how they are related to one another.
Explanation:
