pH refers to the logarithmic scale used to indicate the acidity or basicity of an aqueous solution. It is the negative of the base 10 logarithm of the activity of the hydrogen ion. Solutions with a pH less that 7 are considered acidic and the solutions with a pH greater that 7 are considered to be basic. A pH of 7 is neither an acid nor a base and is considered neutral.
An acid has a high concentration of hydrogen ions (H+) and a base has a low concentration of hydrogen ions. Higher the hydrogen ion concentration, pH is acidic. Among the given substances, lemon juice has a pH of 2, urine has a pH of 6, tomato juice has a pH of 4 and black coffee has a pH of 5. Since lemon juice has a pH of 2, it has the lowest –OH ion concentration.
"Its habitat can vary somewhat if it is
<span> supplied with eucalyptus</span>" is a true statement regarding the Australian Koala. This is how these animals are able to live in zoos outside Australia.
Because less plants means less carbon dioxide turning into oxygen. This impacts ecosystems worldwide as we will all suffer from lack of oxygen- bad air quality. This also effects habitats for animals and if there arn't enough homes or food for the,. they will die.
