Answer:
gold was the original reason as well as other valuable resources
Answer:
false
Explanation:
I think
they cant technically follow them because of how they are written
Explanation:
Elements in same group show same valency because they have same number of electrons in ther outermost shell i.e. Valence shell. Since valency depends upon the valence electrons so they have same valency. Elements in the same group have same valancy.
They help counteract the uneven distribution of solar radiation reaching Earths surface so if there was no surface current Earths surface temperature would increase to dangerous levels over time.
Biogas is a renewable, as well as a clean, source of energy. Biogas plants significantly curb the greenhouse effect: the plants lower methane emissions by capturing this harmful gas and using it as fuel. Biogas generation helps cut reliance on the use of fossil fuels, such as oil and coal.
