extensive aquaculture is low production, low cost aquaculture. An example of this would be if you had a pond for raising Tilapia in Africa, and were only raising them to feed the community you were in.
Euglena live at the surface of the water/pond!
you dont keep ducks in a pond
Some books you may want to look at are Lake and Pond Management by Steve McComas. Another that may be good is Pond Aquaculture Water Quality Management by Claude E Boyde and Ponds by Carolyn Garrick Stern.
A farm pond is a man-made pond created on a farm for agricultural purposes such as irrigation, livestock watering, and aquaculture. It helps store rainwater, reduces soil erosion, and provides a sustainable water source for agricultural activities on the farm.
Euglena get rid of waste through a process called exocytosis. They store waste in specialized compartments within their cell called vacuoles, and then release the waste outside the cell when the vacuoles fuse with the cell membrane.
Euglena obtains oxygen through diffusion from its surroundings, as it lacks specialized respiratory structures. It eliminates carbon dioxide by diffusing it out of its cell membrane into the surrounding water.
Euglena gracilis
A euglena has a flagellum, they use it to move around their habitat which is mainly pond water, some water has so many, it turns green.
Euglena is a protozoon. Euglena gets rid of its metabolic wastes throung contractile vacuoles. The food is ingested into the body to form a food vacuoles. The food vacuole travels along the body where the required nutrients are absorbed. The remaining waste travels out of the body by means of a contractile vacuole.Read more: How_do_euglena_get_rid_of_wastes
no youcrackhead
The common name of Euglena gracilis is "euglena."