Is biodiversity same from place to place?

Biodiversity increases from poles to temperate region state true or false.

Biodiversity refers to:

There are 5 routes from place A to place B and 3 routes from place B to place C. Find how many different routes are there from A to C via B.

Dinesh went from place A to place B and from there to place C. A is 7.5 km from B and B is 12.7 km from C. Ayub went from place A to place D and from there to place C. D is 9.3 km from A and C is 11.8 km from D. Who travelled more and by how much?