Before even using oil immersion lens, make sure you set the microscope to the lowest objective 4x.
You want to start small before increasing the magnification. Before you move to the next power (from 4x to 10x), make sure your center is focused using the coarse adjustment. Then move to 10x, and do the same adjustment. Then onto 40x, and once you get to 100x, use the fine focus (not coarse focus! because it will move the speciman a lot which messes up your field of view. Fine focus is just refinning so the picture appears clear.
Now, when performing oil immersion, get a dropper, and carefully drop an oil on the speciman, and get a slider to cover on top of it (BUT DO IT SLOWLY! you don't want to get any bubbles in it).
Answer: E- The right ventricle.
Explanation: Deoxygenated blood with carbon dioxide and metabolic products collected from the tissues by the capillaries returns to the heart via the venous system and enters the right atrium of the heart. It is then pumped to the right ventricle, then transported to the lungs via the pulmonary artery for gaseous exchange, where oxygen is collected and carbon dioxide is dropped off.
<span>To avoid body damage to the digestive system, the liver produces bile which is being stored in the gallbladder and then releases into the small intestines.
Bile will neutralize the acidic contents which are coming from the stomach by creating an alkaline environment where the intestinal enzymes need to work. The hydrochloric acid which is produced in the stomach increases the acidity of stomach PH for stomach enzymes to digest food. The digestive enzymes which are formed in the small intestine are then damaged by strongly acidic conditions.</span>
Answer:
Instead, real-world agents, including scientists, decide ... Because these scientific models often deviate from ... A is represented, unless there is a good reason to do so.
