Which of the following sentences from the section "A Loss in Sea Otters Changed An Entire Ecosystem" BEST develops a central idea of the
article? *
The southern sea otter population off the California coast dropped from more than
10,000 in the 1700s to fewer than 100 by the early 1900s.
Today, American society has changed to value conservation efforts and to regulate
activities such as the harvesting of furs.
Many fish and other marine animals rely on kelp for shelter, so the shrinking kelp
forests forced these fish into different habitats.
A trophic cascade is when a top predator is either added or removed from an
ecosystem, affecting the population of its prey and other organisms in a food web.
curate and obiective summary of the 25 points