Stachybotrys chartarum (atra) is the black mold that has most been associated with media reports on the toxic effects of fungal exposure. It prefers gypsum wall board as a substrate and requires very high relative humidity levels to grow. Stachybotrys chartarum is known to produce the mycotoxin, satratoxin.
When total utility is rising with the increased consumption of a good, but is rising at a decreasing rate, marginal utility is negative. b. When total utility is rising with the increased consumption of a good, and is rising at an increasing rate, marginal utility is positive. c. At the maximum point of a hill-shaped total utility curve, marginal utility is infinite. d. When total utility is falling with the increased consumption of a good, but is falling at a decreasing rate, marginal utility is positive.
Marginal utility means an additional or incremental utility. Marginal utility is the change in the total utility that results from unit one unit change in consumption of the commodity within a given period of time.For example, when a person increases the consumption of eggs from one egg to two eggs, the total utility increases from 30 utils to 45 utils.arginal utility means an additional or incremental utility. Marginal utility is the change in the total utility that results from unit one unit change in consumption of the commodity within a given period of time.