You are given a list of queries separated by new line. Your job is to answer with the query that is the most well-formed or well-structured query in terms of grammar, punctuations, or spelling errors.

What are the different relationships of an ecosystem ?
How many songs has Avril Lavign san ?
Business cycle in 1920 and 1930 ?
How did Nelson Mandela played in abolishing apartheid ?
What are the different relationships of an ecosystem ?

The air disance between london to cape town ?
Outer layer of skin ?
What are the diameter of planet earth ?
Are rodents endangered ?
Are rodents endangered ?

Why was marks gospel finally written down ?
What is fundamental qualities of modernism ?
How many types of shark are they ?
What kind of lawer of there ?

What is fundamental qualities of modernism ?