Hium-235 has a half-life of 700 million years. How long does it take a 100- gram sample of Uranium-235 to decay to a mass of 50 grams?
A. 1,400 million years
B. 235 million years
C. 350 million years
D. 700 million years

Apower plant recently purchased land and will be building a large factory on wetlands in florida. which of these is not an environmental effect of destroying these wetlands? question options: destroying the wetlands will create a loss of habitat for many species. destroying the wetlands will create flooding. destroying the wetlands will create species to relocate to a new area. destroying the wetlands will change the climate in this area.

What must be done to breed dogs for a partical trait

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d