Question

which of the following is most likely to result in the deforestation of a kelp forest?
an increase in the kelp population.
a decrease in the sea urchin population.
an increase in the california sheephead population.
a decrease in the sea star population.

Explanation:

Sea urchins feed on kelp. A decrease in sea - star population means less predation on sea urchins. With fewer sea - stars, sea urchin numbers can increase, leading to over - grazing of kelp and deforestation of the kelp forest. An increase in kelp population would not cause deforestation. A decrease in sea urchin population would reduce kelp consumption. California sheephead predate on sea urchins, so an increase in their population would help control sea urchins and protect kelp forests.

Answer:

A decrease in the sea star population.