Science Quiz January Flashcards
(13 cards)
What are neutrons?
The cluster of protons and neurons in the center of an atom
What are isotopes?
Atoms of the same element that have different amounts of neurons
What is radiation?
The alpha and beta particles and gamma rays given in the decay of unstable nuclei
What is a fishery?
A fishery is an area that contains a large population of ocean organisms - open ocean
What is aquaculture?
The practice of raising fish and dwelling organisms for food
What is bycatch?
The unintentional capture of marine animals
Why are forests considered renewable resources?
Trees are capable of reproducing seeds
What are anadromous species?
Fish that migrate from saltwater to freshwater to spawn
What are catoromous species?
fish that migrate from freshwater to saltwater
What is commercial fishing?
The practice of harvesting marine or freshwater resources for commercial sale
What are factory ships?
A large ocean-going vessel with extensive onboard facilities for freezing and processing caught fish
What is a fish ladder?
A structure on or around artificial barriers (such as dams and locks) to facilitate diadromous fishes natural migration
What are subsistence fisherpeople?
Fisherpeople who practice harvesting marine or freshwater resources for personal food, shelter, etc.
