<span>An ecological relationship between organisms of different species that are in direct contact can best be described as symbiotic</span>
Appositional growth is the term for the rise in diameter. The periosteum's osteoblasts build compact bone around the exterior bone surface.
<span>Gregor Mendel decided to use purebred plant in his experiments, because they exhibit only one form of trait. A purebred plant is a type of plant that always self-fertilizes to produce offspring that have the same trait as the parent. </span>
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Like a moth to a flame, er, lamp, insects are drawn to bright lights because they confuse the animals' navigational systems. It's a familiar sight, especially in the summertime: moths and other insects gathered around lights like lamps. Often, creatures entranced in such a glow get eaten by predators or overheat.
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