Uranium 235 has a half life of 700 million years. how long does it take a 100 gram sample of uranium 235 to decay a mass of 50 grams

What is the most important consideration for environmental policy makers?

When there is a lower concentration of water outside of a plant cell rather than inside a plant cell the plant will tend to

Which of the following is not a characteristic of rivers and streams? a. vary in size b. mainly saltwater c. part of the water cycle d. flow toward other bodies of water

James Hutton's and Charles lyell's work was important to Darwin because these scientists? A) explained volcanoes and earthquakes B) explained all geologic events on Earth C) suggested that Earth was old enough for evolution to have occurred D)

Characteristics of Physical Changes

When ash, cinders, and bombs build up in a steep pile around a volcano's vent, the result is a a. cinder cone volcano. b. shield volcano. c. composite volcano. d. dormant volcano.

If a person places his or her hand on a hot stove:

What is a short sequence of characters that appears at the end of a filename and is preceded by a period called?

Characteristics that allow neurons to communicate with other body cells include:a) Relaying motor impulses from the cortex to the thalamus. b) Stimulation of "association areas" to analyze information received.

What intensity level of aerobic exercise is considered moderate for older adults?