Which is a characteristic of nuclear fusion but not nuclear fission?
a. releases large amounts of energy
b. is the energy source of stars
c. is used in electric power plants
d. requires little energy to occur

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Draw metallic bonding if two copper

Which of the following describes a situation where competition between producers exists