Sentences with phrase «migrate up the food chain»

But when individuals have more money to spend, they tend to migrate up the food chain to restaurant takeout or prepared items from the rotisserie counter instead of buying more frozen fare, notes a recent report on the sector from research firm IBISWorld.

As microorganisms consume the methylmercury, the metal accumulates and migrates up the food chain; that is why the largest predator fish (sharks and swordfish, for example) typically have the highest concentrations.

Not exact matches

While some populations migrate up and down the mountain streams, they are strictly aquatic feeding on underwater insects and salmon eggs and fry that can accumulate methylmercury and biomagnify it up the food chain.