Free SAT Practice Question

Question 1 of 1
ID: SAT-RW-EI-031
Section: SAT Reading & Writing (RW) – Expression of Ideas
Topic: Transition
Difficulty level: Hard

Practice Mode: Single selected Question » Back to Overview

Lichens make effective pollution monitors because they draw chemicals straight from the air into their tissue, where the accumulated substances can be measured directly. ______ they cost almost nothing to use, since colonies already grow on walls, bark, and stone throughout most cities and need neither power nor upkeep to keep working.

Which choice completes the text with the most logical transition?

» Quit
» Quit