Which life-form existed on Earth for the shortest period of time?

dinosaurs

trilobites

ammonoids

placoderm fish

Quincy listed some natural resources in a table. Which best completes the table? A: x: no y:natural gas B: x:yes y:coal. C: x:no y:wind. D: x:yes y:sunlight

The group that includes gorillas, chimpanzees, bonobos, and humans is called the

17. Acid precipitation is caused by a mix of a. respiration, carbonic acids, and seawater. b. water, soil, and air. c. sulfur dioxide, carbon dioxide, and nitrogen oxides. d. hydrogen, oxygen, and saline.

A client tells the nurse, "all my friends experiment with drugs. i like the high i get when i huff paint. nothing bad is going to happen to me." what is the best response by the nurse?

Which of the following precautions should be taken to reduce the risk of chromosome mutations? a:have routine X-rays taken every week to make sure that your body is healthy b:refuse any X-ray procedures, regardless of the reason for needing the

How long do footprints last at the sene of the crime?

Which of the following items would have the highest density? A. A 2 cm3 block of lead with a mass of 11 grams B. A 12 cm3 block of wood with a mass of 3 grams C. A 12 cm3 block of aluminum with a mass of 2 grams

Why are the nerves that take information from our world called sensory neurons?

Explain the effects of radiation on the cellular process of mitosis and meiosis

A biome that has a large amount of rainfall, high temperatures, and a poor soil is a