If an allele makes up one half of the frequency of a population's allele for a given trait, its allele frequency is

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

What part of the brain is highlighted in the diagram below?