The answer to this certain question is gonna be the letter C- PANCREAS
Invasive species cause more damage than some pollutants. Almost half of the native species in America are endangered because of invasive species. Compared to other threats to biodiversity, invasive introduced species rank second only to habitat destruction, such as forest clearing.
Because water is so good at storing heat energy, it is harder for organisms to experience a change in body temperature in harsher climates.
Light-independent reactions (dark reactions). Light reactions need light to produce organic energy molecules. Dark reactions make use of these organic energy molecules.
Valence electrons are the electron on the outer energy level and they are important because they tell if that element is compatable