Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
The Greenhouse Effect: Human activities like burning fossil fuels increase the concentration of greenhouse gases such as Carbon Dioxide () and Methane (), which trap heat in the atmosphere.
Ocean Acidification: Increased atmospheric dissolves in oceans to form Carbonic Acid (), lowering the and harming marine organisms that rely on Calcium Carbonate () for shells.
Deforestation: Removing trees reduces the rate of photosynthesis, meaning less is removed from the atmosphere and less is produced, disrupting the global carbon cycle.
Eutrophication: Excess nutrients like Nitrates () and Phosphates () from fertilizers run off into water bodies, causing algal blooms that deplete dissolved oxygen ().
Biodiversity Loss: Human impact through habitat destruction and pollution leads to a decrease in species richness, making ecosystems less resilient to changes.
Conservation Strategies: Methods such as reforestation, creating protected areas, and reducing our carbon footprint to maintain the balance and stability of ecosystems.
📐Formulae
💡Examples
Problem 1:
A forest area was measured to have a carbon absorption rate of of per day. After a portion of the forest was cleared, the absorption rate dropped to per day. Calculate the percentage decrease in absorption.
Solution:
Explanation:
The reduction in the number of trees decreases the total amount of captured through photosynthesis. The decrease shows a significant loss in the ecosystem's ability to mitigate the greenhouse effect.
Problem 2:
Identify the gas responsible for ocean acidification and explain its chemical transition when it hits the water.
Solution:
The gas is Carbon Dioxide (). When it dissolves, it reacts as follows: (Carbonic Acid).
Explanation:
Carbonic acid dissociates into hydrogen ions, which lowers the of the water. This makes the environment more acidic, which dissolves the (Calcium Carbonate) in the shells of shellfish and coral reefs.