Some fishing boats run streamers to buoys that trail 150 feet or so from the boat to deter birds. What is this designed to do? They prevent high concentrations of sea birds from trailing boats and defecating in the water, reducing water quality. They prevent sea birds from being tangled or caught by fishing line. They prevent sea birds from eating the fishing catch. They prevent sea birds from being too close, reducing the potential that they will be harmed when fish are thrown back.

If your blood becomes too concentrated with iona, what will happen to the red blood cells

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.

What are the pros and cons of quadrat sampling?