Environmental Science Module 1 PDF

**Central Luzon State University** Science City of Muñoz 3120 Nueva Ecija, Philippines Instructional Module for the Course Science 8: Environmental Science +-----------------------------------+-----------------------------------+ | |...

**Central Luzon State University** Science City of Muñoz 3120 Nueva Ecija, Philippines Instructional Module for the Course Science 8: Environmental Science +-----------------------------------+-----------------------------------+ | | | +-----------------------------------+-----------------------------------+ | -- Sociology | | | | | | -- Economics | | | | | | -- Political | | | | | | science | | +-----------------------------------+-----------------------------------+ Page 2 of 11 +-----------------------------------+-----------------------------------+ | -- Demography | | | | | | -- Geography | | | | | | -- Psychology | | | | | | -- Ethics | | +-----------------------------------+-----------------------------------+ The total environment of an organism includes all other forms of life on Earth and its non-living Do you know? The air we breathe is composed of 78% **nitrogen**. environment. The nonliving environment is made up of substances such as nitrogen, oxygen, water, carbon dioxide, calcium carbonate, phosphates and the organic by-products of the organism's activities. It also includes physical factors such as moisture, wind, tides, ocean currents, temperature, light and topographical factors (altitude and slope). Page 3 of 11 Page 4 of 11 Page 5 of 11 ----------------- ---------------------------------------- Complaints of drowsiness and poor air. 2,000-5,000 ppm ----------------- ---------------------------------------- significant effects at pbb level. Sulfur dioxide (SO2) in air, for example, may be present at 50 pbb. This means that for every 10^9^cm^3^ of air there are 50 cm^3^ of SO2. Sulfur dioxide is a gas. It is invisible and has a nasty, sharp smell. It reacts easily with other substances to form harmful compounds, such as sulfuric acid, sulfurous acid and sulfate particles. About 99% of the sulfur dioxide in air comes from Do you know that since the Pre-Industrial Age (1790s-- 1860s) the amount of CO2 O in the air has increased from 280 to 379 ppm (an increase of 35%)? Page 6 of 11 Page 7 of 11 Page 8 of 11 Page 9 of 11 Page 10 of 11 Gayon, EEP. 2011. Our Changing Environment 2nd edition. DIWA Learniing Systems INC. Page 11 of 11