I believe its b , hope it helps
Layer G must be older than layer F, according to the law of superposition. So the answer is Paleozoic era, I believe.
The answer is A. Sorry if i'm wrong.
<span>The oldest rocks are Early Proterozoic metamorphic rocks</span>
Explanation:
Indicators are substances that are used to test whether a substance is acidic or basic ot neutral in nature. They change their color when added to a solution containing an acidic or a basic substance. ... Naturally occurring indicators are turmeric, litmus, china rose and red cabbage.