What factors are responsible for the decline in freshwater worldwide?

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

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

What is gene expression control that occurs after the generation of rna