They help pump blood at a greater distance than Atria can.
Laurentia<span> (</span>North American Craton<span>) is a large continental </span>craton<span> that forms the ancient geological core of the </span>North American<span> continent. Many times in its past, Laurentia has been a separate </span>continent<span> as it is now in the form of North America, although originally it also included the cratonic areas of </span>Greenland<span> and also the northwestern part of </span>Scotland, known as theHebridean Terrane<span>. During other times in its past, Laurentia has been part of larger continents and </span>supercontinents<span> and itself consists of many smaller </span>terranes<span> assembled on a network of Early </span>Proterozoic orogenic<span> belts. Small </span>microcontinents<span> and oceanic islands collided with and sutured onto the ever-growing Laurentia, and together formed the stable </span>Precambriancraton seen today.
By getting more reactants the plant needs in order to do photosynthesis
Answer:
19%
Explanation:
Weinberg equilibrium assumption is that the allele frequency remains the same from generation to generation.
thus, since the percentage of homozygous is 81 and that of heterozygous is 19%. going by the Weinberg assumption, it will remain the same in the next generation.
