Paleozoic era - Study guides, Class notes & Summaries

APSC 151 – midterm UPDATED Exam Questions and CORRECT Answers Compared to the age of the Universe of about 14 billion years, the currently accepted age of Earth is about ________ years as determined by using radioactivity for dating rocks and minerals. A) 4.6 thousand B) 4.6 billion C) 5.4 million D) 13.7 billion - Correct Answer- B The ________ division of the geologic time scale is an era of the Phanerozoic Eon. A) Paleocene B) Paleozoic C) Permian D) Proterozoic - Correct Ans...

Compared to the age of the Universe of about 14 billion years, the currently accepted age of Earth is about ________ years as determined by using radioactivity for dating rocks and minerals. A) 4.6 thousand B) 4.6 billion C) 5.4 million D) 13.7 billion - B The ________ division of the geologic time scale is an era of the Phanerozoic Eon. A) Paleocene B) Paleozoic C) Permian D) Proterozoic - B

This change is caused by solids that orbit the sun colliding with Earth. correct answers The cause of impact change. The era during which mammals diversified and thrived, primates, grasses, and hominins developed, and Earth's climate transitioned from warm to cool. correct answers Cenozoic Features such as near-instantaneous changes in climate, biological diversity, & the composition of the oceans and atmosphere. correct answers Earth feature(s) caused by impact change A tectonic confi...

GEG 111 - Exam 2 Questions With Verified Answers. Which of the following is an exogenic process? Volcanism Weathering Earthquakes Flows of heat and materials in the mantle - answerWeathering Which of the following is an endogenic process? Weathering Glacial erosion Volcanism Stream deposition - answerVolcanism Uniformitarianism assumes that ©BRAINBARTER 2024/2025 mountains, plains, and canyons formed by catastrophic events. catastrophic episodes have regularly occurred. Earth is...

FNR: 25150 Exam 1 Mammals when did mammals first appear - ANSWER-Mesozoic Era what makes up the mesozoic era - ANSWER-Triassic Period, Jurassic Period, Cretaceous Period what makes up cenozoic era - ANSWER-tertiary period, quaternary period Subclass Synapsida - ANSWER-dominant reptiles during late Paleozoic Epoch Cynodont therapsids - ANSWER-1st mammals, surviving synapsid lineage, departure of reptilian body Synapsida tempor

Which of the following is an exogenic process? Volcanism Weathering Earthquakes Flows of heat and materials in the mantle - Weathering Which of the following is an endogenic process? Weathering Glacial erosion Volcanism Stream deposition - Volcanism Uniformitarianism assumes thatmountains, plains, and canyons formed by catastrophic events. catastrophic episodes have regularly occurred. Earth is quite young and is shaped by dramatic events. the same physical processes we see today ar...

Macroevolution changes in a population over very long periods of time. Speciation the splitting of one species into two or more new species Biological Species Concept offers testable way to define a species that does not depend on appearance: The members of a species interbreed and have a shared gene pool, & each species is reproductively isolated from every other species. Gene flow occurs between the populations of a species, but not between pops of diff species. Biolo...

Rays Biology of Sharks Exam 1 Questions & Answers 2024/2025 What are Elasmobranchs & how many gill openings do they have? - ANSWERS-Sharks & Rays (Batoids) -Have 5-7 gill openings About how long ago did vertebrates descend from small ocean fish? - ANSWERS~ 500 million years ago (mya) [Cambrian Period] What are Chondrichthyes? - ANSWERSCartilaginous skeleton fish How long ago did fish start to diversify? - ANSWERS~450 mya (Paleozoic era) About how many species of sharks are ther...

Which of the following is true about biodiversity on earth? A) It has remained constant over time B) By including fossils, we have a good idea of all biodiversity that has lived on earth C) The presence of some species can alter the presence of other species D) Radiations are relatively rare E) Species numbers change only due to extinction correct answers C To build a phylogeny, you can use A) morphology B) DNA sequence C) developmental date D) fossil features E) all of these correc...

Earliest life forms trace back to - ANSWER-4 billion years ago Earth's early atmosphere - ANSWER-Reducing and lacked oxygen A.J Oparin's hypothesis - ANSWER-Earth's reducing atmosphere plus cooling and lightning storms resulted in primordial soup where organic molecules could be formed S. Miller and H. Urey's experimentation - ANSWER-Water paired with methane and ammonia gas and created a spark; when cooled, the mixture produced amino acids S. Fox experiment - ANSWER-Amino acids ...