The Scientific Method

• Scientific Method is a process of investigation where problems are identified and their explanations are tested by carrying out experiments.
• Observation : An unbiased, accurate report of an event.
• Hypothesis : An educated guess based on observations.... (More)

• ecology – the study of living things and their environments
• environment – everything that surrounds a living thing
• community – all populations that live in a certain place
• ecosystem – living and nonliving things in an environment, together with their... (More)

All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey into the cell, introducing the... (More)