Question

read the passage and answer the following question(s).
human activities and earths atmosphere
evidence from scientific studies supports the claim that human activities are contributing to increasing the average global surface temperature on earth as observed for the past 100 years. the concentration of greenhouse gases in earths atmosphere have increased during this time and are thought to be the major cause for changes in global climate. graph 1 represents the relative contribution of human activities that are likely causing global climate change. graph 2 represents the relative amounts of various greenhouse gases in the atmosphere.
graph 1: contribution of human greenhouse gases in atmosphere
graph 2: relative amounts of greenhouse gases in atmosphere
an environmental group recommends a way to help slow global chimate change. based on data in graph 1, which activity would have the greatest positive impact on slowing global climate change?
a. limiting the clearing of land for building houses
b. using renewable energy sources instead of fossil fuels
c. using organic farming methods instead of harsh chemicals
d. collecting wastewater from industry instead of releasing into wate

Explanation:

• Option A: Limiting land - clearing for housing would reduce deforestation. Deforestation is a significant contributor to climate change as trees absorb carbon dioxide. Reducing deforestation would decrease the amount of carbon dioxide released into the atmosphere, having a positive impact on slowing global climate change.
• Option B: Using renewable energy sources instead of fossil fuels would reduce the emission of greenhouse gases (such as carbon dioxide from burning coal, oil, and gas). Fossil - fuel combustion is a major source of greenhouse gases, so this is a positive step.
• Option C: Using organic farming methods instead of harsh chemicals is more about soil health, biodiversity, and reducing chemical pollution in the environment rather than directly addressing the main greenhouse - gas emissions that cause climate change.
• Option D: Collecting wastewater from industry instead of releasing it into rivers is about water pollution control, not directly related to reducing greenhouse - gas emissions for climate - change mitigation.

Answer:

A. Limiting the clearing of land for building houses, B. Using renewable energy sources instead of fossil fuels