Answer:
The kidneys take of up more Ca2+ and release vitamin D. The bones release Ca2+. The intestines increase reabsorption of Ca2+.
The correct answer is option (B) lemon juice.
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.
The property rights approach to environmental issues often becomes highly relevant in cases involving endangered species.
The approach based on property rights postulates that if exclusive property rights are correctly established, the public good of maintaining high environmental quality may be converted into a private good, and the best possible distribution of environmental resources will be accomplished.
The protection of people's property rights is an efficient method for preserving and rehabilitating endangered animals. It is more likely that recovery will occur if these animals are owned by someone who will benefit in some way from their growth. But if endangered species are nothing more than a burden, any kind of financial incentive to preserve them is met with fierce opposition.
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Answer:
Aerobic means with oxygen.
Answer:
we need to see the diagram
Explanation:
