Which of the following adversely affects the ozone layer? 

A. chlorofluorocarbons
B. greenhouse gases
C. oil
D. coal and natural gas
E. plastics


A. chlorofluorocarbons

Biology & Microbiology

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Discuss energy in reference to Case 1, The First Cell: Life's Origins. The conversion of H2S to sulfuric acid is used as a source of energy by some extremophiles

As described in Case 1, some extremophiles can use hydrogen sulfide gas (H2S) as a source of energy. What can you conclude about the G of the reaction and the relative potential energies of the reactant and product? What will be an ideal response?

Biology & Microbiology

How would paralysis of the intercostal muscles alter inspiration?

a. Inspiration could not take place. b. Inspiration rates would increase due to the relaxation of the intercostal muscles. c. Inspiration could still take place but lung volume could not reach normal inspiratory volume. d. Pleurisy would cause inflammation, resulting in pain and reduced volume.

Biology & Microbiology

Ancestral lobe-finned fishes gave rise to modern-day lobe-finned fishes, the lungfishes, and to the amphibians.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Under which conditions in Great Smoky Mountains National Park would you seek communities containing red oak, white oak, and beech? Refer to Figure 18.8.

A) low elevation, moist B) low elevation, dry C) high elevation, moist D) high elevation, dry

Biology & Microbiology