The correct answer is - accident.
In general, the invasive species are introduced into a new environment accidentally.This means that they have not been introduced on purpose, or in order to cause any harm to the ecosystem, though there are some exceptions.
The invasive species are usually very dangerous to the local ecosystem. The reason for that is that they usually do not have predators in the new ecosystem, or if they are the predators, than the local flora and fauna do not have defense mechanisms to cope with it. They also act very aggressively, have more offspring, as well as having the offspring on much shorter periods of time, which ends in occupying the space of the local organisms and even leading to their extinction.
Ans. Glycogen.
The glucose is primary fuel for the all body activities, but it acts as short term energy storage compound. The glucose is converted into long-term energy storage compound, glycogen. This process is known as glycogenesis and occurs in liver cells mainly.
The glycogen is stored in liver cells and skeletal muscle cells, which is converted into glucose for energy production, when required.
Thus, the correct answer is 'glycogen.'
The hypothalamus controls the secretions of the pituitary gland