Cycles
How have human activities affected runoff in the water cycle?
The removal of vegetation and soil, and constructing drainage networks have increased runoff volumes and shortened runoff time.
What is population density?
The number of individuals, such as humans or other organisms living in an area.
The rapid cutting down of trees to supply the constant demand for wood, while also destroying biodiversity and impacting the climate
Deforestation
An organism that creates its own food from the sun or chemicals
Autotroph
How does a food web differ from a food chain?
A food chain is a path that represents energy flow, and a food web is multiple paths that can show energy flow.
If water evaporated but could not condense, what would happen?
There would be no water left on Earth.
What is a limiting factor and give examples?
Limiting factors include environmental conditions that can be food, water, light, space, and/or shelter. If an organism does not have enough of these, they could perish.
This comes from the overflowing landfills of human waste that makes its way into our oceans, streams, lakes, and other bodies of water.
Pollution
An organism that eats a secondary consumer
Tertiary Consumer
As the predator's population goes up, does the prey population go up or down? Explain why
If there are barely any prey to eat, the predator population declines and the number of prey increase.
Define the Nitrogen Cycle.
The transfer of nitrogen from the atmosphere to the soil, to living organisms, and then back to the atmosphere
Describe how the human population is growing, and why.
The human population is growing exponentially, and factors include poverty rates, immigration, low life expectancy, etc.
Chlorofluorocarbons that were released from refrigerators had a chemical reaction with something in the atmosphere, causing it to open a hole
Ozone Layer Depletion
An organism that eats a primary consumer
Secondary Consumer
What is the difference between a scavenger and a decomposer?
Scavengers feed off dead animals and break them down into small pieces. Decomposers are mainly fungi and bacteria, and consume the small pieces.
In the nitrogen cycle, ammonification is....?
A part of the decaying process. When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen into ammonium so it can go back into the nitrogen cycle.
What is the difference between immigration and emigration? Give an example.
Immigration means to enter an area, emigration means to leave an area.
This is one of the results of climate change and it takes a massive toll on biodiversity
Killing Endangered Species
An organism that eats a producer
Primary Consumer
In a food web, all things are connected...What happens when a part of it is pulled out or broken?
It falls apart.
How does photosynthesis relate to the carbon cycle?
Plants and photosynthetic algae and bacteria use energy from sunlight to mix carbon dioxide from the atmosphere with water to form carbohydrates, which store energy. Oxygen is released into the atmosphere, and this process is known as photosynthesis.
What is carrying capacity and how is it determined?
Carrying capacity is the maximum number of organisms of a species that can be supported by its environment. It is determined by food, water, and space.
The overheating of the planet through the release of greenhouse gas. The inciting incident for this was the intense burning of fossil fuels and cattle farming.
Global Warming/Climate Change
An organism that eats dead things
Scavenger
What type of living thing would be found at the top of a food web?
A predator, such as an omnivore or carnivore.