Answer:
Because humans has not arrived until 20,000 years ago.
Explanation:
The genus homo has been taken to the emergence with the Homo habilis. Homo sapiens has been emerged around 300,000 to 200,000 years ago.
Holen and colleagues in 2017 discovered 130,000-year-old site in California that contain a a mastodon that had been butchered by humans. Some scientists express skepticism because it has been believed that only humans have occupied North America. The Homo sapiens has not arrived until 20,000 years ago.
In homeostasis the body has a target set point which it tries to maintain, with the use of the negative feedback loop the body strives to stabilize the internal environment by regulating the temperature of the body.
Answer: Yes this chemical reaction obeys the laws of physics. Its very simple, let me explain.
Explanation:
When Iron(Fe) oxidizes it gains three oxygen atoms so it reacts to form Fe2O3 so it becomes bigger or explands. Its also sometimes called "oxide jacking".
Answer:
C: A with T and C with G
Explanation:
DNA has four bases and A always pairs with T while C always pairs with G.
The element carbon makes long chains forming, single, double or triple bonds with itself.