Is there a less religious alternative to "the creation" when referring to everything that's alive?

Solution 1:

The scientific term for all life on Earth is "biosphere"; for example, the Wiktionary has:

The totality of living organisms and their environment

And the corresponding Wikipedia article says, in part:

By the most general biophysiological definition, the biosphere is the global ecological system integrating all living beings and their relationships

Solution 2:

Life refers to everything that is alive and it is not religious.

Solution 3:

• All living species may be used to refer to everything that is alive.

But 'creation' , as noted, includes everything, alive or not.

Nature has a more inclusive definition:

• The material world and its phenomena.

Solution 4:

Nature

ODE

1. [mass noun] the phenomena of the physical world collectively, including plants, animals, the landscape, and other features and products of the earth, as opposed to humans or human creations: the breathtaking beauty of nature.

■ the physical force regarded as causing and regulating the phenomena of the world: it is impossible to change the laws of nature. See also Mother Nature.

Nature can refer to petty much all the same things as creation without any sort of connotation.