Gardeners understand that plants have specific ph requirements. most plants thrive in soil with a ph that is slightly acidic, neutral, or slightly basic. imagine your soil is very acidic, with a ph of 3.5. how can you raise the ph to an appropriate level so your garden plants will survive?

a. add fertilizer.

b. water frequently to wash away the acid.

c. add organic matter like peat moss or humus.

d. add a base like limestone or calcium carbonate.

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

Long term exposure to waves can cause sunburns and skin cancer.