# data[].attributes.headline
Why does Earth have both land and water?

# data[].attributes.subject
Why does Earth have both land and water?

# data[].attributes.headline
How do living things use water, rock and air? 

# data[].attributes.subject
How do living things use water, rock and air? 

# data[].attributes.headline
How do those (rock, air, water) interactions support life?

# data[].attributes.subject
How do those (rock, air, water) interactions support life?