Why does organic plant remains best describes coal?

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Which process of living things produces water that enters the water cycle

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes