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20 de may. de 2024 · Alzheimer's disease ( AD) is a neurodegenerative disease that usually starts slowly and progressively worsens, [2] and is the cause of 60–70% of cases of dementia. [2] [15] The most common early symptom is difficulty in remembering recent events. [1] As the disease advances, symptoms can include problems with language, disorientation ...
Hace 5 días · Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. [2] The addition of two whole numbers results in the total amount or sum of those values combined. The example in the adjacent image shows two columns of three apples and two apples ...
Hace 5 días · Type 1 diabetes. A blue circle, the symbol for diabetes. High blood sugar levels, autoantibodies targeting insulin-producing cells. Type 1 diabetes ( T1D ), formerly known as juvenile diabetes, is an autoimmune disease that originates when cells that make insulin (beta cells) are destroyed by the immune system. [5]
Hace 1 día · Knowledge is an awareness of facts, a familiarity with individuals and situations, or a practical skill. Knowledge of facts, also called propositional knowledge, is often characterized as true belief that is distinct from opinion or guesswork by virtue of justification. While there is wide agreement among philosophers that propositional ...
Hace 4 días · Qantas was founded in Winton, Queensland on 16 November 1920 by Hudson Fysh, Paul McGinness and Fergus McMaster as Queensland and Northern Territory Aerial Services Limited. [21] [22] The airline's first aircraft was an Avro 504K. It moved its headquarters to Longreach, Queensland in 1921 and Brisbane, Queensland in 1930.
Hace 4 días · The ocean is the body of salt water that covers approx. 70.8% of Earth. [8] In English, the term ocean also refers to any of the large bodies of water into which the world ocean is conventionally divided. [9] The following names describe five different areas of the ocean: Pacific, Atlantic, Indian, Antarctic/Southern, and Arctic.
Hace 4 días · Asia is the largest continent on Earth. It covers 9% of the Earth's total surface area (or 30% of its land area), and has the longest coastline, at 62,800 kilometres (39,022 mi). Asia is generally defined as comprising the eastern four-fifths of Eurasia.
