What is the largest animal habitat on Earth?

Which forest habitat contains over 50% of the world's plant and animal species?

Which animal builds the world's largest living structure that can be seen from space?

What percentage of all living species on Earth lives in the soil?

Which desert is home to the most diverse array of animal life?

What is the deepest known animal habitat on Earth?

Which bird builds the largest nest of any animal?

What percentage of Earth's freshwater is frozen in glaciers?

Which animal creates the largest underground colonies?

What percentage of all known species live in the ocean?

Which tree provides habitat for the most diverse number of insects?

What is the largest wetland in the world?

Which animal creates the largest above-ground structures?

What percentage of Earth's land surface is covered by forests?

Which habitat type contains the most bird species?

How many different species can a single coral reef support?

What percentage of Earth's species live in caves?

Which habitat has the highest concentration of large mammals?

How many species can live in a single handful of healthy soil?

What percentage of all insect species live in tropical rainforests?