Environmental Science Week 1 health field concept
CHAPTERS 1-4 biology
Healthy people 2020 lifestyle
Environment
Overarching goal Health care organization
Attain high quality, longer lives, free of preventable disease, disability, injury, and premature death
HEALTH DISPARITIES: A type of difference in health that is closely linked with social or economic disadvantage. Health disparities negatively affect groups of people who have systematically experienced greater social or economic obstacles.
ENVIRONMENTAL HEALTH; objectives focus area:
Outdoor air quality
Surface and ground water quality
Toxic substances and hazardous wastes
Homes and communities
Infrastructure and surveillance
Global environmental health
At a global level almost 25% of all deaths are related to environmental factors
Environment Humans
60% ecosystems have been seriously impaired by human behavior (unsustainable)
Overpopulation
Current Population = 7 Billion people
Prediction for 2050 = 9.4 Billion People
TYPES OF RESOURCES
Non renewable
Minerals
Fossil Fuels
Renewable
Trees
Fertile soil
Others
“Potentially renewable”
CHAPTER 5-7 ECOSYSTEMS
ECOLOGY
Literally study of one’s “house”
Interactions
Two components BIOTIC and ABIOTIC
Broadest biological field of study
ECOLOGICAL ORGANIZATION
ORGANISM
POPULATION how many species
COMMUNITY interaction between species
ECOSYSTEM the species interaction with the abiotic/ how things are exchanged
LANDSCAPE how ecosystems interact
BIOSPHERE any area of the earth that has living things in it
GOAL OF ECOLOGISTS
1. Understand how ecosystems function
2. Make connections: landscape ecology
THE FLOW OF ENERGY THROUGH ECOSYSTEMS
Energy is the ability to do work
Potential and kinetic energy
Thermodynamics studying how energy is transformed
FIRST LAW OF THERMODYNAMICS
Energy cannot be created or destroyed
Energy can be changed from one form to another
SECOND LAW OF THERMODYNAMICS
The amount of usable energy available to do work in the universe decreases over time
When energy is changed from one form to another, some is degraded into heat
Heat is less usable form of energy
Entropy
ECOSYSTEM COMPOSITION
PRODUCERS
1. Make their own food
2. Photosynthesis
CONSUMER
1. Feed on other things herbivores, carnivores, omnivores
DECOMPOSERS
1. Break down dead organisms and waste products
BIOGEOCHEMICAL CYCLES
HOW CHEMICALS MOVE FROM LIVING THINGS TO NON LIVING THINGS AND BACK
CARBON you need carbon because its good at building
HYDROGEN creates water and makes energy
NITROGEN helps create amino acids to build protein and guanine
OXYGEN for water and cellular respiration
PHOSPHORUS makes up our lipid bilayers and ATP
SULFUR helps create protein, creates the structure for the big proteins
ENERGY IS USED
