Answer:
20%
Explanation:
A species is placed on the endangered species list when its overall population sees a reduction of 20% over a 10 year period or a 3 generation period.
(This is correct, because I got it right on my quiz)
Answer:
Overfishing is the level of excessive capture of marine animals.
Explanation:
Overfishing poses a great threat to marine biodiversity and ecological balance. The abundance of populations of large predators such as cod, tuna and swordfish has decreased by 90% due to overfishing. If we continue fishing at the current rate, scientists estimate that by 2048 any fish in the sea will have disappeared. Our seas are vulnerable and sensitive and a sudden and significant change in the number of individuals of a species can put great pressure on their ecological environment and a change in the balance of the oceans, and even in the food chain of other species.
Bacteria: *prokaryotic*, (same as prokaryote), and microorganisms. Bacteria is a type of biological cell.
Archaea: *prokaryote*, meaning they have no cell nucleus.
Eukaryote: Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike the prokaryote, Eukaryote belongs to the domain Eukaryota or *Eukarya*. (Eukaryotes, eukarya, all the same thing)
The correct answer would be the last option. It is the measurement of neurotransmitter levels that is not used as a diagnostic test for vascular dementia. Tests that are used for this illness are brain imaging technologies like CT scan and MRI. Also, neeuropsychological tests is commonly used.