Which of the following best explains why the biosphere is a key component of the Earth’s systems? a.

The biosphere is a key component of the Earth’s systems because it is a common concept to many disciplines in science.

b.

The biosphere is a key component of the Earth’s systems because the seasonal cycles directly affect primary productivity.

c.

The biosphere is a key component of the Earth’s systems because it helps drive the other systems by interacting with and exchanging matter and energy with the other spheres.

d.

The biosphere is a key component of the Earth’s systems because it has evolved to create the chemical composition of the planet we know today.