The three-dimensional arrangement of electron groups around the central atom is called
a. electron-pair repulsion
b. electronegativity
c. electron-group geometry
d. geometric design

How are tumors cells different from normal cells

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

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