Tomorrow
A hurricane sweeps through and kills almost all of the Meese. Is this limiting factor density dependent or density independent?
Density independent
Why do MOST food webs end at Tertiary consumers?
There isn't enough oxygen to go any higher.
If the predators population begins to increase what will happen to the preys population?
What is the definition of carrying capacity when in relation to population?
The max amount of organisms an environment can hold.
Only short lived populations grow exponentially, except for one exception. What group is that exception?
Humans
What is the final collateral effect of Eutrophication?
Fill kills
What is the percentage of energy that is passed up from one level to another?
10%
What human activity is adding the most the greenhouse gases?
Cattle
If a small, harmless amount of pesticide is sprayed is it really harmless?
No, bio-accumulation can occur and the pesticide can build.
Why is there a higher chance of getting a form of cancer while being under an ozone hole?
Harmful UV rays can pass through the thin layer easily.
What chemical is causing the ozone layer to thin and produce holes?
CFCs
Bacteria
What is the most basic level in nature is what?
Organisms
What is the reason for the exponential growth of our human population?
The industrial revolution.
What causes rain to become acidic?
When we release harmful gases into our atmosphere.
What is the term for when atmospheric nitrogen is converted to usable nitrogen?
Nitrogen Fixation
Disease is raging through a worm population. What kind of limiting factor is this?
Density Dependent
Why are 3rd world countries populations increasing significantly faster than 1st world countries?
People are having multiple children since death is more common, having "back ups" in case of death.
Why is deforestation such a prevalent issue in our world today?
We are cutting down way to many trees, they produce the oxygen we breathe, they cut down the amount of CO2 in the air as well.
What happens when a population is dramatically higher than the carrying capacity?
How do plants fit into the carbon cycle?
They convert the CO2 back into oxygen.
Why can't water assimilate into the ground in urban areas?
The ground is covered in concrete or asphalt.
What happens when populations get to be to large for the environment to hold?
Food and water shortages, disease spreads quickly and easily.
Why are scavengers not the same thing as decomposers?
Scavengers eat dead organisms, while decomposers break down dead organisms.