What is it called when lava cools and hardens? Sometimes magma flows upward and is forced out onto the earth's surface during a volcanic eruption. Magma that reaches the surface of the earth is called lava. When it cools and hardens, it too forms igneous rock. Igneous rock that is formed on the earth's surface is described as extrusive.n:
Answer:
population density I hope this helps
Answer:
B) adaptation is the answer
Answer:
it is b
the principle here is redundancy, if you need hammers at your work site to do something important you should make sure you have more than one around
same thing here only you don't lose or break the hammer the genes are mutated and you lose that amino acid
Explanation:
Viroids are small single stranded RNA molecules and are found in plants only. Hope this helps.
