The intertidal zone is home to an abundance of aquatic organisms, like the barnacle, that can survive periods where they are not underwater. what type of tide would most likely decrease the abundance of aquatic organisms, and why

Spring tide because it creates a large difference between high and low tides, so the organisms are in extreme environments

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.