Why do you think leewenhoek was excited about what he saw

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Donde se encuentra el adn nuclear en un organismo eucariota?

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