HALLS OF EXTINCTION: ORDOVICIAN, DEVONIAN, TRIASSIC, CRETACEOUS, PERMIAN. (PART 1) | Ecologist

Ordovician Extinction by Rafał Sarnecki

How plants caused the first mass extinction🌱 480 million years ago, plants were emerging on landThey really thrived in an atmosphere high in carbon dioxideThis gave them the fuel to perform photosynthesis, sucking out CO2 and replacing it with OxygenThat paired with the weathering of the newly formed Appalachian mountains which also absorbs CO2 reduced global temperatures, leading to an ice age🧊 This is because CO2 is a greenhouse gas that traps heat in the atmosphereThese early plants were ve

Peter Stampfel And The Atomic Meta Pagans - The Ordovician Era!

Peter Stampfel And The Atomic Meta Pagans - The Ordovician Era!

SOLVED: A paleontologist studying Ordovician fossils collected 40 samples of the now-extinct trilobite Pradoxides. The 40 samples came from the same rock strata (i.e. layer of rock) but from different locations. She measured the cephalon length in millimeters of all the specimens and recorded the data. She wants to know how cephalon length varies by location: What is the explanatory variable in this study? The cephalon length. The location. The fossil samples. The age of the fossils.