What are the two ways nitrogen gas is turned into a form plants and animals can use? A: Lightning and Worms
B: Lightning and Bacteria
C: Bacteria and Worms
D: Bacteria and Fungi

The first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation

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 type of bonds link individual amino acids together?