Answer: Gemstones of various minerals are highly prized for beauty, durability, and rarity. Some noncrystalline materials of organic origin. Examples are pearl, red coral, and amber also are classified as gemstones. Gemstones have attracted people since the ancient times, and have been used for jewelry.
Explanation:
I don't know Number 3 so i can't answer.
4. (B) Pulmonary arteries the only artery in the choices that deliver deoxygenated blood.
5. (D) Immunoglobulins are proteins found in blood plasma.
6. (C) Diastolic pressure. I think you meant "relaxes" not "relates"
7. I think the answer is (A) Enzymes. Hormones can also be an answer i think.
Answer:
PH is a scale used to specify the acidity or basicity of an aqueous solution.
Acid soils have a pH below 7
6.5 to 7.5 for basic soils
The green world hypothesis explained that the number of herbivores is also limited by predators from the top down.
hopes this helps :)
Answer:
Dissolving of solute in a particular solvent depends upon the temperature of the solvent.
Explanation:
Solubility is a amount of solute that can be dissolved in fixed amount of solvent at a particular temperature. It is crucial that the amount of solvent remains constant when a solubility of a substance determined .Here the amount of solvent (water) is kept constant at (100 ml). The variable that is changed the temperature of the solvent.
Suppose a solution able to hold more solute at a particular temperature is unsaturated. A solution is able to hold maximum solute at a particular temperature is saturated. Under certain conditions a solution hold more solute than the maximum amount at a particular temperature is supersaturated solution. Regarding the dissolving of barium hydroxide and potassium chloride is clearly given in a table which is attached.