Which statement is NOT true regarding Earth's past climate? Group of answer choices

Earth was very warm 100 million years ago

Tropical forests and swamps covered much of Earth's surface many years ago

A shallow ocean covered much of North America 450 million years ago

Earth's climate has stayed the same throughout the past

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.