Which galaxies are moving towards the observer​

During convection, less dense fluid rises and denser fluid sinks.

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things

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