Answer:
The correct answer is d. hydronium ion.
Explanation:
Hydronium ion is a positively charged molecule that has three hydrogen atom bonded with an oxygen atom. Hydronium ion is formed when the water molecule gains an extra H+ ion from somewhere.
This H+ ion easily form bonds with one of the lone pairs present on the water molecules. H2O is also a polar molecule and has a partially positive charge due to which the extra H+ ions get attracted to the negative pole of water and make hydronium ion. Therefore the correct answer is d.
Answer:
B
Explanation:
The right lymphatic duct drains the right side of the head, neck, and chest wall; it also drains the right lung and the lower half of the left lung, the heart, the dome of the liver, and the right diaphragm via the bronchomediastinal trunk.
Since the blood is already separated form the cellular components and the plasma, blood typing can be a challenge if the medical technologist does not know the theory. Antigens are membrane proteins on the red blood cells. There are 2 types of antigens namely the A antigen and B antigen. Blood types are according to the antigen present in the red blood cells. Blood type O has no antigens in the red cell surface, blood type A has A antigen, blood type B has B antigen, and blood type AB has both A and B antigens. In identifying the antigen, the researcher should extract the cellular components rather the plasma. The plasma, on the other hand, contains antibodies.
C.
The soil in the delta is less fertile, causing fewer plants to grow.
The flooding of the Nile caused silt and nutrients to replenished in the soil every year.
