- a competition, or a match, which consists in staring at your opponent
- fights in wich the opponents use their fists
- rules or codes which control the way you dress
- One process that can lower atmospheric carbon is the oceanic carbonic acid cycle, specifically when the oceans have (decreased/increased) carbonate ion concentrations.
- What is the main impact of increasing atmospheric sulfur dioxide?
- Energy flows unidirectionally through ecosystems, as inorganic molecules and heat during its many transfers up and down between trophic levels.
- What is the average residence time for water molecules in the Earth's lakes and reservoirs? Check all that apply. (4 000 years, 1-10 years, 10 years, 10 000 years)
- Approximately 99% of non-potable water is locked underground as water or as ice.
- Which of the following are ways in which carbon can enter the atmosphere? Check all that apply. (cellular respiration, volcanic eruptions, leaching from minerals or rocks, subduction of tectonic plates)
- increasing concentration of stably toxic substances at each trophic level
- Which of the following statements about the nitrogen cycle is false? Check all that apply. (Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+), Denitrification by bacteria converts nitrates (NO3−) to nitrogen gas (N2), Nitrification by bacteria converts nitrates (NO3−) to nitrites (NO2−), Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds)
- Global nitrogen enters the living world via nitrogen fixation pathways and it's release by movement of rocks.
- decomposition then uptake and use of nitrogen by microbes
- Excess agricultural fertilization eventually leaches excess nitrogen and phosphorus to waterways, which leads to overgrowth of photoautotrophs and excessive uptake of nutrients by heterotrophs in a process called
- Oysters and clams used to help keep the Chesapeake Bay clean but are less successful today. What is the main cause of this reduction in effectiveness?
- Atmospheric sulfur enters the atmosphere from the decomposition of inorganic molecules and burning of fossil fuels by humans.
- Where is the largest reservoir of carbon located on earth?
- energy that is available to primary consumers uptake of phosphorus nitrogen and potassium
- Decomposers are found everywhere on earth where organic matter is found as long as oxygen is present.
- lifestyle of breaking down plant and animal tissues and components