It's called radioactive dating
The governments of different countries are becoming more involved in protecting the environment as well as preserving biodiversity. Many different acts are issued in order to accomplish this.
One very prominent agency playing a role in this is the United States Environmental Protection Agency. This agency helps in maintaining a healthy environment for the life of earth to live in.
I'm not sure but I think its C or B I'm leaning towards C
Answer:
Spiny skin is another characteristic.
Autotroph is an organism that produces complex organic compounds from simple substances.
