Leachate: water that is percolated through a solid and leached out of some of the constituents
Potassium (chemical symbol K, atomic number 19), a member of a group of chemical elements called alkali metals. Potassium ions are crucial nutrients for living organisms. The hydroxide of potassium is an significant industrial chemical that is used in fertilizers.
Beryllium is a member of the alkaline earth metals family and positioned at the top of group two of the periodic table. Beryllium alloys are used in the production of structural and lightweight materials for space vehicles, missiles, high-speed aircraft, and communication satellites. The thin sheets of beryllium foil are utilized with X-ray detection diagnostics because the foil can filter out visible light as well as allow only X-rays to pass through.
Answer:
I am pretty sure it is A
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An ischemic stroke is the sudden loss of blood flow to an area of the brain. It results in loss of neurological function.
Ischemic stroke involves the obstruction of blood flow within the brain. The obstruction can be caused by a thrombotic or embolic occlusion of an artery in the brain.
I don't know your chart, but I can provide some data:
Niger's migration rate is -0.5/1000 people: this migration rate is negative, which means that more people leave Niger than enter it.
Italy's migration rate is 4.2/1000 people: this means that more people enter Italy and settle there than leave it.