1. 1800 years to get 1 billion population
Answer:
The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top.
Explanation:
The principle of superposition states that in an undeformed sequence of sedimentary rocks, each layer of rock is older than the one above it and younger than the one below it (Figures 1 and 2). Accordingly, the oldest rocks in a sequence are at the bottom and the youngest rocks are at the top.
The correct answer is false. Insulin speeds up glucose transport across cell membranes and promotes glycogen synthesis and slows down glycogen breakdown.
Adipokines, proinflammatory substances, and free fatty acids are released by adipose tissue, an endocrine organ that affects both glucose and lipid metabolism. These substances reduce muscle ATP synthesis and glucose metabolism, encourage the synthesis of harmful lipid metabolites, and change insulin signaling. Insulin affects adipose tissue in two ways: 1) by increasing glucose absorption and triglyceride synthesis, and 2) by reducing triglyceride hydrolysis and the release of FFA and glycerol into the bloodstream. Elevated plasma FFA levels have been demonstrated to impair muscle insulin signaling, promote hepatic gluconeogenesis, and impair glucose-stimulated insulin response. Adipose tissue insulin resistance, which is the impaired suppression of lipolysis in the presence of high insulin levels, has been linked to glucose intolerance.
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