Water Cycle
What force drives the water cycle?
Solar Energy (The Sun)
Which process removes carbon dioxide directly from the atmosphere?
Photosynthesis
What is the Nitrogen Cycle?
Recycling of Nitrogen so it can be reused
T/F: Phosphorus is found in the atmosphere
False
Phosphorus is stored in underground in rocks and soil
What are biogeochemicals cycles?
Elements that move from one organism to another and among parts of the biosphere through closed loops
-Carbon, Nitrogen, Phosphorus, Water Cycle
What 3 processes occur during the water cycle?
Collect
Purify
Distribute
Which reservoir stores the greatest amount of carbon on Earth?
Atmosphere
What are the main 3 places nitrogen travels through during the nitrogen cycle
Atmosphere
Plants & Animals
Soil, Fertilizer, Ground
How do animals get phosphorus?
By eating plants or drinking water that contains phosphorus
What is a reservoir?
places an element is stored
From what source does most of the evaporated water come from?
90% surfaces of plants called transpiration
Which human activity adds the largest amount of carbon to the atmosphere?
A. Deforestation
B. Cellular Respiration
C. Fossil Fuels
C. Fossil Fuels
How do fertilizers most directly impact the nitrogen cycle?
Increasing available nitrogen for plants to grow
What is the first step of the phosphorus cycle?
Weathering: the breaking down of phosphorus from rocks
What are the 5 steps of the nitrogen cycle?
Nitrogen fixation
Nitrification
Assimilation
Ammonification
Denitrification
What 4 paths does precipitation take as it falls back to the surface?
Surface Runoff
Stored as ice in glaciers
Ground Water
Traveling through the ecosystem
How does deforestation affect the carbon cycle?
Reduces photosynthesis and increase atmospheric CO2
Excess nitrogen runoff water bodies often causes:
A. Eutrophication
B. Acid Rain
C. Desertification
A. Eutrophication
How do human activities affect the phosphorus cycle?
Adding fertilizers to soil
Why is phosphorus important for living organisms?
It helps form DNA and RNA
How do humans impact the water cycle?
Withdrawing large quantities of water from surface and groundwater
Aquifers are being depleted
Drainage and filling wetlands for farms and urban development
Which process returns carbon to the atmosphere from living organisms?
Cellular Respiration
What form of nitrogen is produced during nitrogen fixation?
NH3- Ammonia
To much phosphorus in an ecosystems can cause excessive growth in what? What is this known as?
algae ; algae blooms
What two cycles involve assimilation?
Nitrogen and Phosphorus