- Life Sciences
fats that are solid at room temperature and are found in animals. They are thought to be linked to heart disease.
series of interlinked food chains by which energy circulates within an ecosystem.
structure that contains the two centrioles arranged at right angles to each other in animal...
highly addictive substance found in tobacco that accelerates the heart rate, and contracts and...
unicellular organisms that do not have a proper nucleus or membrane bound organelles.