have a backbone. during development the free-swimming larvae possess a tail, a dorsal nerve cord, a dorsal stiffening structure (not composed of bone) called the notochord, and gill slits in the throat (pharynx) region. tunicates are among the most common marine invertebrates with around species. most...
than combustion fumes from paint , hair spray , varnish , aerosol sprays and other solvents. these can be substantial; emissions from these sources was estimated to account for almost half of pollution from volatile organic compounds in the los angeles basin in the s. [ ] waste deposition in landfills...
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alternatives. if no compensation for the price rise occurs, as is usual, then the decline in overall purchasing power due to the price rise leads, for most goods, to a further decline in the quantity demanded; this is called the income effect . in addition, as the wealth of the individual rises, demand...
per year. the chirina hatchery is part of a broiler vertical integration project, and is designed primarily to serve the integration needs. during the first phase of the project the hatchery incubated million hatching eggs per year, which grew to million at the completion of phase ii. after completion...
and tribal communities across the country have had difficulties carrying out their daily operations without reliable, efficient broadband access. currently, % of all rural americans do not have access to broadband, including % of all people of color living in these communities and % of all those living...