Formed by a spinning column of air that touches the ground in 1% of thrunderstroms

A thick and mostly flattened layer of cooled lava is called a volcanic crater. a. True b. False

What is a human egg cell

Why is it not surprising that staphylococci are the leading cause of wound infections?

Vascular plant is to nonvascular plant as cactus is to

What two properties of rock change during metamorphism?

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?

Which of these is used to find the precise age of a rock? Index fossils Radioactive dating Relative dating Stratified rock layers