7
An isthmus is a narrow neck of land joining two larger areas of land - for example Panama and Suez. There are no different kinds of isthmus.
How many kinds of centipedes are there
water and land
No water. Dry land.
Appalachian mountains
there is how ever many kinds there is in this world
why are there so many kinds of fish
The grainy kinds
there are 6 kinds
All kinds
Water and Land
google is good