Weegy: The change in isotopes over time due to the emission of radioactive particles is known as D. radioactive decay.
User: In addition to possibly releasing harmful chemicals in the environment, mining is considered
A. the least dangerous job in the United States.
B. the most dangerous job in the United States.
C. the most lucrative job in the United States.
D. the least lucrative job in the United States.
Weegy: In addition to possibly releasing harmful chemicals in the environment, mining is considered: C. the most dangerous job in the United States.
User: Which colorless and odorless gas, produced by radioactive decay of Uranium-238, is considered to be a
cancer-causing agent?
A. Boron
B. Radon
C. Hydrogen
D. Oxygen
Weegy: The colorless and odorless gas, produced by radioactive decay of Uranium-238, considered to be a cancer-causing agent is known as B. Radon
User: Fuels derived from living things are known as
A. electricity.
B. hybrid fuels.
C. synthetic fuels.
D. biomass fuels
Weegy: Fuels derived from living things are known as Biomass fuels.
User: Another name for unicellular organisms that dominated Earth up to the Precambrian time is
A. stromatolites.
B. prokaryotes.
C. cyanobacteria.
D. eukaryotes.
Weegy: Another name for unicellular organisms that dominated Earth up to the Precambrian time is: B. Eukaryotes.
User: Ancient cyanobacteria released ______, which assisted in creating the atmosphere as we know it today. A. lead
B. ore
C. hydrogen
D. oxygen
Weegy: Ancient cyanobacteria released A. [ oxygen, which assisted in creating the atmosphere as we know it today.
(As the first free oxygen was released through photosynthesis by cyanobacteria, it was initially soaked up by iron dissolved in the oceans and formed red coloured iron oxide, which settled to the ocean floor.)
]
User: The principle that states the undisturbed rock sequence has the oldest rocks on the bottom is known as
A. original juxtaposition.
B. original ...
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