Which of the following is NOT a land use that can affect watershed health? A. Timber production

B. Urban development

C. Flood control measures

D. Volcanoes

An easy way to calculate the amount of energy available at each level is to what?

Nucleus has two lobes; contains granules of lysosomal enzymes; functions in attacking parasitic worms and plays complex roles in inflammatory diseases like allergies and asthma. what blood cells are described?

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