Lo siento, este en ingles
Explanation:
Hydrogen and helium are found in all stars. Ninety percent of all atoms in the universe are hydrogen atoms and fusion reactions fuel stars, resulting in the formation of helium and higher atomic number elements. This is the case because of the Big Bang, when temperatures were so high that only energy could exist.
Answer:
B) developing country
Explanation:
A developing country is a country with a growing economy and infrastructure. A growing economy is often depicted by rising per capita GDP of the populace. Examples are South Africa, Nigeria, e.t.c
A developed country is one with an advanced infastructural and technological innovations. They are usually characterized by a high standard of living and available social infrastructures.
Answer:
The Amazon is the world's longest river.
This is a true statement.
Answer:
Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. ... Pigs, sheep and cattle were domesticated over 10,000 years ago.
Explanation:
