Match the era on the left with its characteristic on the right.
?
When Earth's atmosphere
formed
Precambrian
2
Ended with a massive
impact
Paleozoic
12
When oxygen-breathing
organisms first thrived
Mesozoic
Cenozoic
Began about 65 million
years ago
SUBNUTI

Which environment would most likely not contain fossils? a a thick deposit of cracked, dried mud b sediment deposited in a sandy river bed c intrusive rock formed from cooled magma d layers of sand accumulated for a century

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit

The majority of australians live in the w. urban rimx. tropical northy. outbackz. sunshine coast