True or false. lichens are especially sensitive to waterborne pollutants

True

Explanation:

I'd say its true due to the fact Lichens are very sensitive to pollutants in general.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]