The second answer would be correct.
When fossil fuels combust, compounds such as NOₓ (Nitrogen Oxides) and SO₂ (Sulfur Dioxide). These compounds can then react with the environment to form the acids sulfuric acid and nitric acid, which, when reacted with water, release H₊ ions. The higher the concentration of H₊ ions, the more acidic the solution.
Answer:
I think it's D one. Because all others are wrong
Hormones travel through the body by using blood streams, such as veins. The hormones then get to the target cell by moving through the liquids surrounding the cells. They then change how the cell works, thus changing the body.
Answer:
There are different explanations but the main one is the number of electrons the element has.
Explanation:
The elements are also divided into nonmetals, metals, and metalloids. There are general areas for example, most metals are in the middle and left side of the periodic table, nonmetals are typically on the right, and metalloids are inbetween them.
Answer:
There are 8 electrons in the last level. Because of the octet rule.