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Author Question: During which time period were dinosaurs most abundant?[br][br][b][color=black]Question ... (Read 34 times)

sjones

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During which time period were dinosaurs most abundant?

Question 2

Why werent plants the first form of life to appear on earth?



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bubulittle310@msn.cn

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Answer to Question 1

Dinosaurs were most abundant during the Jurassic period, 180135 million years ago.

Answer to Question 2

Some 2.2 billion years ago, free oxygen was present in the atmosphere. Living things used this reactive substance,
not decaying plant material, in biochemical functions of their cells. The free oxygen in the atmosphere also
produced a layer of ozone, which filters out the ultraviolet light from the sun that is harmful to life.





 

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Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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