The correct answer is: B. Greenhouse effect
The greenhouse effect is the process by which radiation from a planet’s atmosphere warms the planet’s surface. It is caused by greenhouse gases such as water vapor, carbon dioxide, methane and ozone. These gases trap energy in the atmosphere, which warms the planet.
Air pollution is the contamination of the air with harmful substances. These substances can be gases, particles, or biological molecules. Air pollution can cause respiratory problems, heart disease, and cancer.
Global effect is a term used to describe the impact of human activity on the planet. This includes climate change, deforestation, and pollution. Global effects can have a devastating impact on the environment and human health.
Land pollution is the contamination of the land with harmful substances. These substances can be chemicals, waste, or radiation. Land pollution can cause soil erosion, water pollution, and health problems.
The greenhouse effect is a natural process that helps to keep the Earth warm. However, human activity is causing the greenhouse effect to become stronger, which is leading to climate change.