Which of the following accurately describes the ph scale?
a. the lower the ph is, the more basic the solution is.
b. the lower the concentration of hydrogen ions, the higher the acidity is.
c. the greater the ph is, the lower the acidity is.
d. the greater the concentration of hydroxide ions, the higher the acidity is.

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.