Explain how knowing the half-life o carbon 14 can tell scientists the absolute age of a rock sample

What is dyslexia? and how can a person like orlando bloom overcome it. (read an article about orlando bloom) and answer the question

It has been theorized that all of the modern continents on Earth were once part of a single continent. What scientific evidence is used to support this theory?

Why do cells need a selectively permeable barrier?

The plants in the in what are allowed to self-pollinate

What igneous rock has a vesicular texture and contains the minerals potassium feldspar and quartz

What is an abiotic factor of a marine ecosystem? A). Food produced B). Temperature change as you go deeper into the ocean C). Reproduction of animals

1. Suppose that xylem were located only in the roots and stems of a plant. Would fluids in the xylem still move? Explain.

What activity will decrease body temperature? Sweating Exercising Adding clothing Shivering

Organisms with true radial symmetry A. tend to be highly mobile. B. do not have a distinct head region and tend to be sedentary or passive drifters. C. can be divided into two matching halves along only one plane. D.

1. The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms?