The "world" constitutes the planet Earth. There are 8 major planets around the Sun in our solar system, and many more orbiting other stars.
(see related question)
We can never know how many planets there are in the entire universe.
there is many
There are eight planets in our solar system. However, in the entire cosmos, there are billions of planets that orbit stars in other solar systems.
I think there are about 6,000,000,000,000,0005 trees in the entire world. But i am not poisitive
There are 8.7 Million animals in the world
The entire solar system is in the milky way, with all the stars you can see.
as many as you want
There about 500,000,000 kyle in the entire world.
85
billions
195
It isn't even clear how many dwarf planets our own Solar System has (it may be some tens of them, hundreds, or even thousands) - much less how many there are in the entire Milky Way or in other galaxies.