The correct answer is True
Step-by-step explanation:
Limestone is a type of rocky material that is mainly formed of fragments of ancient marine organism especially organisms such as coral or mollusks in tropical seas as these organisms are made from calcium carbonate that dissolves over time and forms piles of limestone process that takes many years. Because of this, it is true limestone deposits are often evidence of ancient tropical seas because limestone is formed as the result of organisms that live mainly in tropical seas, rather than in other types of seas, and also this process takes many years which means seas that are now limestone are mainly ancient or existed just miles of years ago.