Study hydrocarbons, crude oil, Earth resources, the atmosphere, and environmental impact. 34 lessons in 5 subtopics.
What is the equation for photosynthesis?
The balanced equation for photosynthesis is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂. The How Photosynthesis Increased Atmospheric Oxygen notes cover this in full.
How do you calculate percentage change?
Percentage change = (new value - old value) ÷ old value × 100. The Data Analysis and Sustainable Development notes cover this in full.
How old is the Earth?
The Earth is about 4.6 billion years old. The How Earth's Early Atmosphere Formed notes cover this in full.
What is the word equation for photosynthesis?
The word equation for photosynthesis is carbon dioxide + water → glucose + oxygen, in the presence of light and chlorophyll. The How Photosynthesis Reduced Carbon Dioxide notes cover this in full.
What is a carbon footprint?
A carbon footprint is the total amount of greenhouse gases emitted over the full life cycle of a product, service or event. The Understanding Carbon Footprints notes cover this in full.
What is crude oil?
Crude oil is a finite fossil fuel found in rocks, formed from the remains of ancient biomass, mainly plankton, buried in mud millions of years ago. The What is crude oil and where does it come from? notes cover this in full.
What is LPG?
LPG, or liquefied petroleum gas, is a crude oil fraction containing short-chain hydrocarbons. The From Crude Oil to Modern Life - Fuels and Petrochemicals notes cover this in full.
What are greenhouse gases?
Greenhouse gases are gases that can absorb and re-emit infrared radiation, keeping Earth warm. The What are greenhouse gases and why are they important? notes cover this in full.