The instrument of choice would be the the clam shell sampler, which is also know as a grab sampler. Another instrument they use is the piston corer which is an open tube on a cable that gets dropped from a ship.
Necrosis
it is when a cell has a pre mature death
due to an injury or lack of blood supply
Answer and Explanation :
Plants and algae comprise the lowest level of the trophic system. Called primary producers or autotrophs, plants and other organisms create their own food using photosynthesis.
Furthermore Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemo-synthesis, make up the bottom of the trophic pyramid
It gills, fins, and scales
