The greenhouse effect is bad and leading to global warming
Indicate whether the statement is true or false
F
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How does ingested methanol lead to the damaging of a person's eyes?
A. The methanol, once in the eyes, forms a crystalline precipitate that accumulates within the retina. B. Eye tissues are soluble in methanol. C. Methanol is very volatile. When brought close to the eyes, its vapors can harm the eyes. D. The methanol is metabolized into formaldehyde, which is toxic to most living tissue.
The thermosphere:
A) has a low heat content. B) would feel very hot to an astronaut. C) is characterized by a decrease in temperature as height increases. D) is part of the homosphere.
Which of the following is true of the isoelectric point of amino acids?
A) The isoelectric points of all amino acids are the same. B) It is the pH at which an amino acid conducts electricity. C) It is the pH at which an amino acid has equal numbers of positive and negative charges. D) All of the above are true.
If phenolphthalein is used as an indicator which of the following will be observed if excess sodium hydroxide is added to acetic acid?
A) from colorless to pink B) from red to yellow C) from pink to colorless D) from yellow to red