As much as 90 percent of the oxygen in our atmosphere is the result of what?

How does natural selection favor an individual that can detect deceitful communicators? see section 50.5 (page 1062) ?

Here is a food chain in a meadow. Use this food chain to answer this question. Which is the herbivore in this food chain? A. corn snake B. field mouse C. grass D. hawk

The speed of a mechanical wave through a medium depends on the type of medium. It also depends on the type of mechanical wave. Which statement is true? All waves travel at the same speed if no medium is present.

Who th describes organs in human body

Which is a correct statement of Newton's second law? An object in motion stays in motion, and an object at rest stays at rest unless acted upon by a net force. Every mass in the universe is attracted to every other mass in the universe.

In modern classification system, unicellular organisms that contain chloroplasts and a nucleus would be considered; A) annelids B) protists C) archaea D) chordates

The northern copperhead is Agkistrodon contortrix contortrix, the southern copperhead is Agkistrodon contortrix mokasen, and the cottonmouth is Agkistrodon piscivorous. Therefore, A. all are subspecies of Agkistrodon. B.

What's a primary consumer

After plants absorb energy from the sun the energy gets converted into blank energy for the plant to carry out life activities

A type of succession in which an ecosystem damaged by fire is reestablished