Which of the following factors is not an important advantage for aquatic organisms living near the surface of a lake or pond? Group of answer choices

higher oxygen level

presence of decomposing organisms

more sunlight

warmer temperature

Sickle cell amelia is a condition condition where the red blood cells are deformed which is affected by sickle cell amenia

Assume that you are interested in separating short (200-400 bp) dna molecules from a pool of longer molecules in the 10,000-20,000 nucleotide range. you have two recipes for making your polyacrylamide gels: one recipe uses 1.5 percent agarose and would be considered a “hard gel,” while the other uses 0.5 percent agarose and would be considered a loose gel. which gel should you use to separate the short (200-400 bp) dna molecules from a pool of longer molecules in the 10,000-20,000 nucleotide range?

Which of the following is directly affected by the cardiovascular system?