Need the answer quickly   a scientist observed that fiddler crabs are capable of plugging up the territorial burrows that they live in. these territorial burrows are located underwater during high tide and are part of the exposed shoreline during low tide. evaluate the observation given the limiting factors during the high tide and low tide.

the crabs are taking out the other burrows so that they have a better shot at breeding and reproducing

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

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