Match each statement with the type of weathering it describes. chemical weatheringmechanical weathering

Chemical weathering refers to the weathering of rocks by the use of certain chemicals

Mechanical weathering refers to the weathering of rocks by the application of physical forces or pressure or expansion of size of the rocks.

Explanation:

There are certain chemicals which helps in the decomposition of rock particles by breaking the bonds between rock particles. Feldspar is the example of chemical weathering which occurs when the substance present in the rocks combine with rain water. Due to this, rocks change into clay particles. Mechanical weathering of rocks occur due to the contraction and compression of rock due to change in temperature. Rocks also broken by applying pressure on it.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

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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