Define
Define ecology.
Study of life
Does photosynthesis contribute to ecology?
Solar radiation is made available through the process.
Define an abiotic factor.
A non-living factor affecting species abundance and dispersal (Temperature, Sunlight, Wind, Soil Type, etc)
Rainfall affects dispersal of a population by changing a bend in a river between the population.
Abiotic
The two main types of aquatic ecosystems
Freshwater and Marine (salt water)
Define autotroph.
An organism that can produce its own food
Do Tor F Energy is pass down through tropic levels?
False
Which determines broad species distributions: climate or weather?
CLIMATE
Weather, because it is short term, is more likely to impact an individual organism rather than the entire population.
An ascaris nematode feeds on nutrients in the intestines of a pig.
Biotic (Predation)
State three characteristics of a eutrophic lake.
Shallow, warm, more sunlight, nutrient rich, more vegetation
Define niche.
The role, or way of life of a species within its environment.
Are Tor F Earth's resources finite?
True
Solar radiation (increases/decreases) with increasing latitude?
Because of the tilt of the Earth, the most direct sunlight will hit at the equator. The farther away a spot on the Earth is from the equator, the less solar radiation it will receive.
A tiger affects the dispersal of gazelle by consuming newborn young.
Biotic (Predation)
Describe thermal stratification
During the summer the top layer (epilimnion) warms faster than the bottom (hypolimnion) which stays at 4 celsius giving it a higher density.
As fall comes, the epilimnion cools and the lake has the same density on top and bottom. The water mixes which mixes the nutrients and does a carbon dioxiode-oxygen exchange
As winter approaches, the epilimion cools further to 0 while the hypolimnion remains at 4.
As spring approaches, the ice melts and warms the epilimion to 4 and causes the turnover again.
Define commensalism.
Only one species benefits without harming or benefitting the other.
What is the common number of links in a food chain?
Four
How do Earth's orbit and tilt create seasons?
Because of the change in solar radiation with each latitude due to tilt of the Earth, as the Earth rotates around the sun, different areas of the world are hit with varying levels of solar radiation throughout the year, thus creating "seasons."
An ox-bird eats the parasites of the skin of a cow.
Biotic (Mutualism)
Define a biome.
Cover large areas and are characterized by their climate and the types of plants and animals that are found there
Give an example of a niche. Explain
Hawk and owl. Owls hunt during the night, hawks hunt during the day. If two species occupy the same niche they would constantly be in competition.
Give five examples of an abiotic factor.
1) Soil Type
2) Temperature
3) Climate
4)Water
5)Wind
Worms are unable to living in a certain environment because of the soil type.
Abiotic