A41 gram sample of a substance that's used to detect explosives has a k value of 0.1392.

find the substances half life, in days. round answer to nearest tenth.
using the exponential decay formula

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

Living organism in our word are connected to other variety of ways

What are the two main purposes of edgar allen poe’s, “the masque of the red death? ”