Substances known as fuels have energy stored as: chemical energy
mechanical energy
kinetic energy
electrical energy

Which organelle releases chemicals that break down large food particles into smaller ones?

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity