The changes in the population of a species in a stable ecosystem has diverse effects on the ecosystem on the whole.
The reduction in the baleen whale population will cause a rapid increase on the prey organisms on which the baleen whale fed. This is because the number of predators for these preys will decrease.
On the other hand, the number of organisms which fed on the baleen whale will decrease as they will have lesser amounts of food available.
Symbiosis is an interaction characterized by two or more species living purposefully in direct contact with each other. The term "symbiosis" includes a broad range of species interactions but typically refers to three major types: mutualism, commensalism and parasitism.
An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome. Genetic material may or may not be lost as a result of the chromosome breaks.
Cocaine appears to produce its effects largely by increasing the supply of the neurotransmitter dopamine at key neurons throughout the brain. The missing word is dopamine. I hope this is the answer that you were looking for.
