How could climate change affect the ecosystems of the island nation of samoa?
a. increased cyclone activity could damage land plants and coral reefs
b. increasing global temperatures could raise ocean levels and temperatures subsequently damaging aquatic environments
c. a and b
d. none of the above

C. a and b

Samoa, a small island in the South- west Pacific. Climate changes affect the ecosystem. Climate change brings the rise in temperature of ocean and also the water level rises. The reason behind this is melting of glacier ice. The rise in temperature will not be suitable for aquatic organisms to survive. Rise in water level will result in cyclone which will wipe out the organisms inhabiting near the shore.

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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