Which of the following statements is false? a. tissues exist within organs which exist within organ systems. b. communities exist within populations which exist within ecosystems. c. organelles exist within cells which exist within tissues. d. communities exist within ecosystems which exist in the biosphere.

The correct answer is option B

Explanation:

The correct hierarchy level is

Organelles-cells-tissue-organ-organ system-organism-population-community-ecosystem-biosphere.

Community refers to the group of populations of two or more species located in the specific area. Thus, populations exist within community which exist within ecosystem.

Thus, option B is incorrect.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)