The accumulation of mineral salts in irrigated land is called soil salination. One of the undesired effects of irrigation is soil salination. Irrigation water often contains some salt at varying levels. Salt is nasty to plants and does not make themn grow, so farmers have to deal with salination by flushing the soil with extra water to leach salts out. Proper soil management and monitoring of water table is necessary to reduce impact of salination to soil quality.
Atherosclerosis and the obvious danger of free floating cholesterol in the blood that can circulate and deposit anywhere, even in the arteries/veins while flowing which can also cause a blockage of arteries/veins and cause an embolism. Also fatty deposits in the cell's membrane that can make it more fluid than it should be causing the cell to lose its rigid membrane structure or even making it more rigid sometimes depending on the environment.
Answer:
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Codominance- Occurs when two of the same gene are present in a living thing, and both alleles are expressed separately in different parts of an organism.Instead of one trait being dominant over the other, both traits appear.
Microbes are everywhere. They populate the air, the water, the soil, and have even evolved intimate relationships with plants and animals.
The human body is inhabited by millions of tiny living organisms, which, all together, are called the human microbiota. Bacteria are microbes found on the skin, in the nose, mouth, and especially in the gut. We acquire these bacteria during birth and the first years of life, and they live with us throughout our lives
On the other hand, areas of the body such as the brain, the circulatory system and the lungs are intended to remain sterile (microbe free). The human body provides many unique environments for different bacterial communities to live.
Answer:
In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs. (Ans. A)
Explanation:
In heart, heart muscle cells is responsible for the circulating the blood throughout the body. The heart contains four chambers, two upper called as atrium and two lower called as ventricle, 1 atrium and 1 ventricle present on both right and left sides of the heart.
Blood which is returning from other parts of the body and is no longer oxygen rich, enters from the top right chamber of the heart. Than this blood is pumped into the right vertical and through the pulmonary artery into the lungs for absorb more oxygen.This oxygen rich blood is then pumped into the top left chamber present in the heart, and then into the lower left chamber before being pumped out into the body from the aorta.
So, the answer is A.
