In the lesson a thermos is presented as an example of an isolated energy system. how could you change the thermos into an open energy system

An enzyme lowers the energy of activation. what does that mean?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

Which phrase best describes the main goal of a human community