What is the difference between dna and rna

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Set comes up with for examples of sound waves ocean wave light wave and hand wave which of tonys examples is not an actual scientific wave

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?