Lichens use chemicals to break down rocks, which will turn into soil.
Answer:
hemoglobin, hemoglobin carries oxygen in the blood and it is made up of four subunits, two each of the α and β types.
Explanation:
Answer:
A gas-powered lawn mower is a complex machine because for it to function it does more than one motion. For example, it has a wheel and axle system so it can move when powered. And it has a system of simple machines and other parts that are put together to accomplish the task of cutting grass.
Explanation:
Answer: the <span>Permian–Triassic extinction event ; {"end of the Permian era"} .
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I am pretty sure that the actual answer hides in the question itself, therefore I'd choose the second option. According to the phrase "he more successful of the two", it definitely should be B. Competition.
