Discuss the concerns Snelgrove has regarding the health and safety of our oceans and ocean life

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus