A A dichotomous key is a tool that allows the user to determine the identity of items in the natural world based on the item's characteristics
B. "Dichotomous" means
• divided into two parts" Greek origin
• dichotomous keys always give two distinct choices in each step, often they are opposites
C Who Can It Be Now?
• Gru has an uncanny way of telling his minions apart, but can you? Use the dichotomous key
below to find the names of Gru's minions

NEED THIS ASAP

True or false? a circle could be circumscribed about the quadrilateral below.

Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years