_______ are so numerous that they are thought to be the most abundant of all marine arthropods.

Question

Quizplus · Accepted Answer

The question mentions that the organisms being referred to are marine arthropods, which narrows down the possible answers to crustaceans and insects. However, insects are not typically found in marine environments, so crustaceans are the most likely option. Additionally, the question states that these organisms are believed to be the most abundant of all marine arthropods, which further supports the answer of crustaceans as they are known to be a highly diverse and numerous group of animals in aquatic environments.

_______ Are So Numerous That They Are Thought to Be