What is a compound action potential? Group of answer choices a single neuron's action potential as visualized by the EMG a single muscle cell's action potential visualized with the EMG the algebraic sum of multiple cells' action potentials recorded by the EMG the sum of a nerve cell action potential and a muscle cell action potential

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.