Based on the graph you see here, when did the us birthrate grow most quickly?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

What does the positioning of transcription factors determine?

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