Clear-cutting is the most common method of timber removal. Clear-cutting removes all the trees in a given area, often by using large machinery. From an economic standpoint, the benefit of this approach is that humans can harvest maximum timber with minimal energy and cost.
Answer:
The nervous system
Explanation:
The nervous system comprises the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, consisting of the cranial, spinal, and peripheral nerves, together with their motor and sensory endings.
Answer:
its function is to absorb light
Answer:
The correct answer is option 'D':During ventricular systole, the left ventricle generates more than 120 mmHg
.
Explanation:
A blood pressure of 120 mm Hg means that during the ventricular systole the blood leaves the ventricles to the rest parts of the body the pressure that it exerts on the walls of the arteries equals pressure exerted by a column of 120 mm of mercury. At the peak flow the pressure should be just exceed 120mm Hg in order to initiate circulation. The excess pressure is needed as we need to overcome the resistance of the blood in the arteries that is at a pressure of 120 mmHg
Answer: Myocardial infarction is said to occur when the amount of circulated blood that get to certain part of the heart decreases or blood did not get to those areas at all. This usually lead to the destruction of the heart muscles. Another term for myocardial infarction is heart attack. Myocardial infarction usually occur as a result of blocked coronary arteries. Coronary arteries are the ones responsible for supplying blood to the heart muscles. These coronary arteries can become narrowed or blocked as a results of atherosclerosis. When the arteries are blocked, it becomes impossible to get oxygenated blood to the heart and this leads to myocardial infarction.
