There are, however, other primitive forms of life that can flourish under such conditions.

By either name, a primitive but efficient form of life.

Imprinting is only the most primitive form of learned behavior.

We feed on more primitive forms of energy, as you do.

These chains are proposed as the first, primitive forms of life.

It is spectacular even in its present, relatively primitive form.

The old view is that our ancestors were a small number of primitive forms.

If not, then we'll be back to a more primitive form of medicine.

They were to give way to a more primitive form of law.

In its most primitive form, a connection is associated with a single channel program.