If a wood is a softwood, all of the following are likely true EXCEPT it has a grain.
it has broad leaves.
it stays green all year round.
it has only a few types of cells.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

they kick it to the curb.

explanation:

that current was nasty.

yes, because even though a theory has a  lot of evidence to support it, it is not always true