Sessile organisms reproduce in a form of asexual reproduction or through budding. Fertilized organisms or larvae, which were once attached to an organisms body, are dispersed into the water and finds a new substrate then lives on its own. The chance on where a new organisms would thrive is determined by outside sources such as water current or movement.
The population of herbivores wouldn't decrease because their food source is being increased. Predators wouldn't leave because more herbivores come to eat the increased number of producers, thus more than likely increasing the number of predators.
The type of thermal energy which flows from one substance to another when the temperature of the two substances is different is known as heat. Hence, the blank can be filled with 'heat'.
