Answer: Option (b) is the correct answer.
Explanation:
An atom which gains electrons becomes negatively charged and an atom that donates electrons become positively charged.
Therefore, when we rub a silver coin against a wool cloth then cloth becomes positively charged this means that the cloth has lost electrons and the silver coin has gained electrons.
Thus, we can conclude that the statement silver coin gained electrons is true.
Explanation:
the plant takes in energy from the sun and uses it to change water and carbon dioxide into sugar and oxygen
Answer:
Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.
Explanation:
