Intricate loops of silk help net-casting spiders trap prey in webs
core: Something — usually round-shaped — in the center of an object. fiber: Something whose shape resembles a thread or filament. gland: A cell, a group of cells or an organ that produces and discharges a substance (or “secretion”) for use elsewhere in the body or in a body cavity, or for elimination from the body. insect: A type of arthropod that as an adult will have six segmented legs and three body parts: a head, thorax and abdomen. There are hundreds of thousands of insects, which include bees, beetles, flies and moths. microscope: An instrument used to view objects — such as bacteria or the single cells of plants or animals — that are too small to be visible to the unaided eye. prey: (n.) An organism hunted by another, often for food. (v.) To attack and eat another organism. Proceedings of the National Academy of Sciences: A prestigious journal publishing original scientific research, begun in 1914. The journal’s content spans the biological, physical and social sciences. Each of the more than 3,000 papers …




