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It is not possible to know for certain, but early humans likely communicated using gestures, vocalizations, and eventually simple sounds and words. These forms of communication would have allowed them to cooperate and survive in groups.
In most contexts, "earth" is not capitalized unless it is being used as a proper noun, as in "Earth" to refer to the planet. So for your example, it would be correct to say "walk on the earth" with "earth" in lowercase.
Yes, Chinese people, like people from any culture, can whistle. Whistling is a universal skill that is not specific to any particular ethnicity or nationality.
—The Earth rotates on an axis, making one full rotation every 24 hours. Different sides of the Earth are exposed to the sun during the course of these 24 hours, with half of the planet being exposed to sun while the other half is deprived of light. It is this rotation that causes day and night.
"What on earth," he asked, "do you mean?"
Orig. by Eco13: no In this usage, no, since it's general. But say the class was a specific course, like Earth Science 101, you would have to capitalize it.
Earth is an M-Class planet.
I just learned about this in science class, 1. Cell Phones 2. TVs
A geologist of course, they study rocks, and land formations. and as you must know volcanos are a land formation
Earth... most likely..
Life is on earth of course
Waste Allocation Load Lifter Earth-Class
of course
Not likely.
yes of course it is part of the earth.
Well of course it is
In the course of the Earth's history, millions of them have.