my guess is False i think that is the correct answer, because their are mammals that live in the tundra.
Mitochondria are unusual organelles. They act as the power plants of the cell, are surrounded by two membranes, and have their own genome. They also divide independently of the cell in which they reside, meaning mitochondrial replication is not coupled to cell division. Some of these features are holdovers from the ancient ancestors of mitochondria, which were likely free-living prokaryotes.
The answer is false. Group work is better than having leaders
Sources of heat from inside earth is radioactive decay and residual heat.