Can you please put your question in English?
Sorry can you write the answer more understanding
Race, ethnicity, and nationality allow people to connect and be classified. I dont know what your lesson is though.
The outer planets are the planets placed beyond the asteroid belt - they are also called the "Gas Giants" - they are gaseous (so the correct answer is b) , that is, they are mostly composed of helium and hydrogen. They are: Neptun, Saturn, Uranus and Jupiter
Technology has made agriculture much faster and also more reliable. Tractors and plows have made it easier to plant and grow things.