How many grams of Carbon-14 remain in a mastodon tooth that started out with 64 grams originally and went through 2 half lives

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.