1. what is the ultimate source of all the energy that powers your cells (and > 99.9% of all life on earth)? a. when did this process evolve and how do we know? b. when did appreciable levels of oxygen (o2) begin to build up in the atmosphere? c. why was there such a long delay between the dates in part 2a and 2b above?

20 brainliest for whoever answers correctly and answers all choose the statements that accurately describe china's "one child policy." china's "one child policy" began as soon as the communists came to power. the "one child policy" was meant to keep the population from reaching 700 million. the "one child policy" was meant to slow china's population growth. the "one child policy" began as a result of the country's war with japan. some people were allowed to have more than one child. the "one child policy" began in 1979. the "one child policy" was most enforced in urban areas. the "one child policy" ended at the start of 2016. china's population is current just under 1 billion people.

The larges lakes in the world are found in: asia europe north america south america

Fossil fuels such as coal, oil, and natural gas were formed over millions of years by