Bats use echolocation.
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The bat relies on echolocation to navigate through dark caves and detect prey by emitting high-pitched sounds and listening to the echoes that bounce back.
Some species of bats have been found to use Earth's magnetic field for navigation. They have iron-rich cells in their noses that can detect the Earth's magnetic field and help them navigate. This ability is still not fully understood and is an area of ongoing research.
Nitrogen is a colorless, odorless, and tasteless gas that makes up about 78% of Earth's atmosphere.
The sentence "I am a rock" is an example of a metaphor. It is comparing the speaker to a rock to convey strength, resilience, and emotional detachment.
This is a run-on sentence because two independent clauses ("By the 1970s scientists have accepted the idea of moving continents" and "Today geologists refer to this movement as plate tectonics") are connected without proper punctuation or conjunction. To correct it, you could separate the clauses into two sentences or use a semicolon to connect them.