A common factor associated with all past and even current mass extinction events is... O Meteorite strikes. O Increase in rainfall. Rapid change in global environmental conditions. O Increased vulcanism.
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- Forces that cause geologic change include _____ (select all that are correct). a. erosion b. natural selection c. volcanic activity d. tectonic plate movement e. wind f. asteroid impactsWhich of the following is NOT true of conditions during the Hadean eon? a. The atmosphere held no oxygen. b. Rocks began to rust. c. Volcanic eruptions were common d. Meteorites struck the Earth continually.The Gulf of St. Lawrence is home to the beluga whalesThere once were thousands of belugas in this popula tion, but now there are fewer than 1000 whales. High levels of organic chemicals have been found in the bod ies of dead whales. Describe how bioaccumulation and biomagnification have contributed to harmingthe be luga whales.
- The geological record indicates that over the course of the last 510 million years, the Earth has seen at least _____ mass extinction events.EVOLUTION CONNECTION The fossil record indicates that therehave been five mass extinction events in the past 500 millionyears (see Concept 25.4). Many ecologists think we are on theverge of entering a sixth mass extinction event. Briefly discussthe history of mass extinctions and the length of time it typicallytakes for species diversity to recover through the process ofevolution. Explain why this should motivate us to slow theloss of biodiversity today.Scientists find evidence of a large meteor impact on the coast of the Yucatán Peninsula in Mexico. What can the scientists most likely expect to find in the layers of rock that are about the same age as the impact? O evidence of the mass extinction of many species O evidence of a gradual change of one species over time O evidence of a rapid change in one species O evidence of the stability of many species over time Finish 1 12:23 hp ) & 60
- If two continental land masses converge and are united during continental drift, then the collision should bring about O a net loss of intertidal zone and coastal habitat. O the extinction of species adapted to intertidal and coastal habitats. an overall increase in the surface area located in the continental interior. all of these answers are correct. O an increase in climatic extremes in the interior of the new supercontinent.Extinction The 6th (Holocene) mass extinction is mostly the result of human activities. O True O FalseOne argument for the existence of the Anthropocene era is that the carbon cycle is relatively unchanged from previous centuries species loss is relatively low less land is being used for farming biodiversity loss has exceeded a planetary boundary O planetary boundaries have now been defined
- O distributic O distribution of rocks and structures evidence of past climate zones that would not fit in their current locations What did Wegener call the giant landmass he theorized existed 30O million years ago? Pangaea O Big Ol Continent Gigantia Titanica What metaphor did Wegener use to explain HOW the continents975 centimeters 97.5m 1. What structures help the blue spruce tree survive the harsh, snowy, winters? A Needle-shaped leaves, instead of thin flat leaves, to help it survive ice and snow during the winter B The green color caused by chlorophyll C Branches that allow you to hang Christmas ornaments on them DA tall thin branch at the top of the tree where a star can be placed ocesses that must occur in ordWhat seems to be a common occurrence with all mass extinction events? Rising CO2 Rising water pH Rising temperatures None of the above