*Question*
Q: The period immediately following the transmission of an impulse in a nerve or muscle, in which a neuron or muscle cell regains its ability to transmit another impulse, is called the ______ period. Choices: - activation - extraction - interstitial - refractory A:
**Answer**
refractory

*Question*
Q: Volume is another way of measuring what? Choices: - length - weight - height - material A:
**Answer**
material

*Question*
Q: Typically hard, high-melting solids that conduct heat and electricity well, the transition elements have many properties in common with other what? Choices: - oils - deposits - organics - metals A:
**Answer**
metals

*Question*
Q: The rate of evolution is influenced by the rate of changes to what? Choices: - dna - migration - the earth - the environment A:
**Answer**
the environment