 standards overview of standards science standard a unifying themes  students apply the principles of systems models constancy and change and scale in science and technology a1 systems performance indicators 68 students describe and apply principles of systems in manmade things natural things and processes b explain how the output of one part of a system including waste products from manufacturing or organisms can become the input of another part of a system a4 scale performance indicators and descriptors 68 students use scale to describe objects phenomena or processes related to earth space matter and mechanical and living systems b use proportions averages and ranges to describe small and large extremes of scale  science standard e the living environment  students understand that cells are the basic unit of life that all life as we know it has evolved through genetic transfer and natural selection to create a great diversity of organisms and that these organisms create interdependent webs through which matter and energy flow students understand similarities and differences between humans and other organisms and the interconnections of these interdependent webs e1 biodiversity performance indicators descriptors 9diploma students describe and analyze the evidence for relatedness among and within diverse populations of organisms and the importance of biodiversity d analyze the effects of changes in biodiversity and predict possible consequences e2 ecosystems performance indicators descriptors 9diploma students describe and analyze the interactions cycles and factors that affect shortterm and longterm ecosystem stability and change b describe dynamic equilibrium in ecosystems and factors that can in the long run lead to change in the normal pattern of cyclic fluctuations and apply that knowledge to actual situations mlr h pe standard a health concepts 4 environment and personal health performance indicators descriptors 9diploma students determine the interrelationship between the environment and other factors and personal health a analyze how environment and personal health are interrelated  statewide standards health careers g3 identifies and discusses the interdependence of the body systems related to various factors g4 compares selected diseases disorders warranted list  students will work write and speak effectively when doing research in all content areas  career clusters  use communication skills demonstrate written communication skills use communication technology  mercury in watersheds  