If a negatively charged balloon is brought near a neutrally charged metal block, what will most likely happen to the charges?
Balloon
Metal Block
Electrons in the balloon will move away from the metal block,
Nothing will happen until the two objects touch.
Protons in the metal block will move away from the balloon,
Electrons in the metal block will move away from the balloon

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The number of brain synapses is believed to peak at

Adult wasps sting caterpillars and inject their eggs into the caterpillars. the larvae feed on the caterpillars, leading to the death of the caterpillars. what kind of a relationship exists between the wasps and the caterpillars? a. the adult wasps are parasites to the caterpillars. b. the caterpillars are parasites to the wasps. c. the adult wasps are commensals, and the caterpillars are hosts. d. the caterpillars are commensals, and the adult wasps are hosts.