Facilitated diffusion uses ion or proteins to move ions in other substances across the cell membrane from high concentration to low concentration

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences