Which form of nitrogen is most readily absorbed by plants?

Which of the following is a primary source of volatile organic compounds (VOCs) in the atmosphere?

Which of the following is a method used to reduce water consumption in agriculture without reducing crop yield?

Which fossil fuel is primarily composed of methane?

Which process is most effective for removing pathogens from drinking water?

Which process is primarily responsible for the natural removal of carbon dioxide from the atmosphere?

Which of the following practices is essential for maintaining genetic diversity within a species?

Which renewable energy source can provide a consistent and reliable base-load power supply?

Which of the following is a natural source of carbon dioxide emissions?

Which agricultural practice involves growing different types of crops in succession on the same land to maintain soil fertility?

Which process in the water cycle involves water changing from a solid to a gas without passing through the liquid phase?

Which of the following technologies is used to reduce nitrogen oxide emissions from vehicle exhaust?

Which of the following renewable resources is considered carbon-neutral because it absorbs as much CO2 during its growth as it releases when used as fuel?

Which type of water pollution is characterized by the presence of organic and inorganic chemicals that are toxic to aquatic life?

Which technique is used to prevent soil erosion on steep slopes by creating a series of step-like structures?