Plz 50 points 1. the organisms that died off in the greatest mass extinction in earth history all died within days or weeks. true false 2. tetrapods are two-legged animals. true false 3. trilobites were shallow marine animals that flourished during the lower paleozoic. true false 4. paleontologists agree that the burgess shale fossils can all be classified into modern groups of organisms. true false 5. the cambrian saw a tremendous diversification in life forms in part because the extent of shallow seas opened up many marine habitats marine regressions opened up many habitats on land competition with the ediacara fauna caused rapid evolution of cambrian organisms all of these 6. simple plants lacking vascular tissue, like mosses, began to colonize land during the period. ordovician paleozoic mesozoic permian 7. the permian mass extinction, which occurred 250 million years ago, extinguished percent of marine species. 20 75 10 95 8. name the kind of animal groups which existed during the paleozoic era. amphibians invertebrates reptiles all of the above 9. the permian extinction is believed to have taken place in separate parts. 3 4 6 5 10. for land plants to flourish needed to evolve. flowers puddles of water insects seeds

Science27 of the most iconic, jaw-dropping photos of the earth and the moon from spacedave mosher  oct 1, 2018, 11: 13 am etnasa/flickrapollo 11 astronauts took this photo of earth on july 20, 1969.from the ground, earth looks like a boundless fertile plain that beckons to be explored and exploited.but astronauts would beg -  and even plead  - to differ."you realize that people often say, 'i hope to go to heaven when i die,'" jim lovell, an astronaut who flew on the apollo 8 and apollo 13 missions to the moon, previously  told business insider. "in reality, if you think about it, you go to heaven when you're born."lovell has seen first-hand that we live on a tiny rock hopelessly lost in the void. he's also quick to tell you it's the only one we've got - a  fragile spaceship  for more than 7 billion people: "you arrive on a planet that has the proper mass, has the gravity to contain water and an atmosphere, which are the very essentials for life. and you arrive on this planet that's orbiting a star just at the right distance - not too far to be too cold, or too close to be too hot - and just at the right distance to absorb that star's energy and then, with that energy, cause life to evolve here in the first place. in reality, you know, god has really given us a stage, just looking at where we were around the moon, a stage on which we perform. and how that play turns out is up to us, i guess."humanity has recorded photos of earth from hundreds, thousands, millions, and even billions of miles away, some of them taken by lovell himself.these images not only scientists study our dynamic world, but also understand how a habitable planet looks from afar, which aids the search for  more worlds. most importantly, however, the images underscore our peculiar existence on  a mote of cosmic dust.take a moment to ponder 27 of the most arresting images of earth that humankind has ever captured from space.a