Environmental challenges in the US include all of the following except . A. acid rain B. water pollution C. urban heat islands D. rural freeze zones PL HEL

Environmental challenges in the US include all of the following except rural freeze zones.

Environmental challenges in the US include all of the following except .

A.

acid rain

B.

water pollution

C.

urban heat islands

D.

rural freeze zones

Please select the best answer from the choices provided

A

B

C

D

Explanation:

D is the correct answer!

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

answer; collective security;