area 51
some where in government labs.
Genghis Khan and his hordes of Mongols were almost unstoppable.The hordes of invaders just kept coming.The illegal immigrants darted across the border in hordes.
The earth would be too cold for life. Greenhouse gases have been essential for life on this planet, and have kept Earth warm for millions of years.
people and dinosaurs never co-existed
Dragons have never existed and are not real.
The universe is huge and constantly expanding, and so, many things are happening all at once, so maybe a species just went extinct somewhere, a star exploded, or something else. It is hard to say if there are aliens or we are truly alone. There are many theories, and researches going on about this so if you'd like you can go read a few and get more thoughts on this topic, because until there is a definite answer all we have are theories, unfortunately.
The Cherokee tribe has not kept the kind of records which would allow us to know with confidence how long they have existed, but anthropological evidence would suggest that 30,000 years is a reasonable approximation.
No because Earth is kept warm by the sun's thermal energy. However, it would be much colder if we didn't have the greenhouse effect. The greenhouse effect is caused by a blanket of gases, mainly carbon dioxide, which insulates the earth. IMPROVE THIS ANSWER AND COMMENT IN IT PLEASE
Temperatures on earth are kept stable due to the atmosphere. Other factors are the closeness to the sun, the tilt of the Earth, and several other things.
without global warming you cant live because without it you wouldn't have enough heat kept in the earth. he earth would be cold... but with greenhouse layers there's too much heat kept in or protected .. so this melts icecap's. etc.
Gravity.
It is kept in orbit by Earth's gravity.
By a force called gravity