yes
our planet earth has its own theory.... base on my scientific search, our planet started when the matter of the universe explode... and the left particles... started to grow with the help or the other elements of matter in the universe...
Earth is a planet. As a matter of fact you live on Earth and are standing on it right now!
EARTH
matter
Very little new matter enters the Earth system, so exsisting matter must cycle continuously to for this planet to support life
Most earthlike is a matter of debate, but could be Mars.Furthest is Neptune.
Does it matter you have healthy plants and you've helped the Earth.
Yes, Earth is made up of various types of matter. It consists of solids, liquids, and gases that make up the planet's structure, atmosphere, and surface features. Earth's matter includes elements like carbon, oxygen, silicon, and more.
The Earth is considered a closed system in terms of matter, meaning that matter does not enter or leave the Earth on a significant scale. While small amounts of matter may enter or exit the Earth's atmosphere, the overall mass of the planet remains relatively constant.
Not entirely sure what you mean with "living planet"; there is no known life on Mercury, or on any other planet on our Solar System for that matter, except on Earth of course.
Depends on how dense it was;If it was normal matter, then it and the Earth would merge (messily) as a larger planet.If it were compressed matter it would probably explode.If it were a black hole it would fall into the Earth, orbiting it center of the planet,and (slowly) eating the Earth until the planet collapsed into itself.
Earth is a closed system in terms of matter, meaning that no new matter is added from outside the system. Matter can cycle within the Earth's systems (such as the water cycle or carbon cycle), but it does not enter or leave the planet.