Answer:
E. that area of the membrane is in the absolutely refractory period.
Explanation:
Refractory period is a period during which neuron cell cannot be stimulated (depolarized). This is why the action potential can only travel in one direction from the neuron body towards axon.
Refractory period occurs because of the inactivation of voltage-gated sodium channels (while action potential is at its peak) which cannot be open for a certain period of time. and membrane cannot be depolarized.
Bleaching of the coral reefs. This is caused from greenhouse gases in the atmosphere, a main cause for these gases are our vehicles we drive.
Answer:
The youngest rock layer is always those on the top
.
Explanation:
Breccia and conglomerate are similar sedimentary rocks composed by fragments larger than two millimeters in size.
Dolostone is a carbonate sedimentary rock that contains dolomite and is related to limestone.
DOM is the abbreviation of the term Dispersed Organic Matter.
The finches are an example of adaptive radiation. Adaptive radiation is a process in which organisms diversify rapidly into a multitude of new forms, particularly when the environment makes new resources available, creating new challenges and opening environmental niches.
