• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/70

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

70 Cards in this Set

  • Front
  • Back

Define Evolution

A change in the genetic composition of a population over time.

Define microevolution

Evolution which gives rise to new species or changes in traits.

What is Species Richness

The number of species in a given area

What is species eveness

The measure of whether a particular ecosystem is numerically dominated by one species or are all represented by similar numbers of individuals.

How many mass extinctions are there said to be?

5 and we are in the middle of the 6th

What are primary causes of population decline?

- Habitat alteration


-Invasive species


-Pollution


-Over-harvesting


-Global climate change

What is ESA?

Endangered Species act:


It forbids the gov. and private citizens from taking actions that destroy endangered species or their habitats.

What are keystone species?

a species that plays a role in its community that is far more important than its relative abundance might suggest.

What is primary succession?

Occurs on surfaces that are initially devoid of fertile soil. (Takes a long time)

What is secondary succession?

Occurs in reas that have been disturbed but have not lost their soil.

What factors create Genetic diversity?

-Genes


-Genotype


-Mutation


-Phenotype

What is natural selection?

When the environment determines which individuals are most likely to survive and reproduce.

What is allopatric speciation?

When new species are created by geographic or reproductive isolation

What is sympatric speciation?

The evolution of one species into two species in the absence of geographic isolation. *Usually in plants

What are some factors that regulate population?

-Pop. size


-Pop. density


-Pop. Distribution

What are the different ways populations are distributed?

-Random


-Uniform


-Clumped

What are Density Independent factors?


The size of the population will influence an individuals probability of survival.


EX:


-Unusual weather


-natural disasters


-seasonal cycles


-Human interaction

What are Density Dependent factors?


The size of the population has no effect on the individuals probability of survival.


EX:


-competition


-predation


-parasitism


-disease

Describe the Exponential growth model

It is a J curve

Describe the Logistic Growth model

It is an S curve to where the pop. growth eventually falls to zero.


( If food becomes scarce, the pop. will fluctuate. )

Define K- selected species

The pop. of a species that grows slowly until it reaches the carry capacity.


(Humans, whales, elephants)

Define R-selected species

The pop. of a species that grows quickly and is often followed by overshoots and die-offs.


(mosquitoes and dandelions)

What are some factors that limit population growth?

The primary productivity of an ecosystem can be reduced when there is an insufficient supply of a particular nutrient.


What is predation?

The use of one species as a resource by another species.


( + - )


Mutualism

A type of interspecific interaction where both species benefit.


( + + )

Commensalism

A type of relationship in which one species benefits while the other is neither harmed nor helped.


( + 0 )

Competition

The struggle of individuals to obtain a limiting resource.


( - - )

Parasitism

Is a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host.


( - + )

Food chain

The sequence of consumption from producers though tertiary consumers

Food web

A more realistic type of food chain that takes into account the complexity of nature

What is GPP?

Gross Primary Productivity- the total amount of solar energy that the producers in an ecosystem capture via photosynthesis over a given amount of time

What is NPP?

Net primary productivity- the energy captured (GPP) minus the energy respired by producers

What are the trophic levels?

-Tertiary Consumers (Hawk) 10J


-Secondary Consumers (Mouse) 100J


-Primary Consumers (Butterfly) 1,000J


-Primary Producers (Grass) 10,000J


*Sunlight 100,000J

What are some factors that drive Human Pop. Growth?

- changes in pop. size


- Fertility


-Life Expectancy


-Age Structure


-Migration

What is the theory of demographic transition?

That a country moves fro ma subsistence economy to industrialization and increased affluence, it undergoes a predictable shift in population growth.

What are the stages of demographic transition?

Phase 1: Slow pop. growth because of high birth rates and low death rates



Phase 2: Rapid pop. growth because birth rates high death rates decline due to better sanitation, clean drinking water, access to food and goods, health care



Phase 3: Stable pop growth as the economy and educational system improve and people have fewer children



Phase 4: Declining pop due to economy developing delaying births.

Describe the Geologic Time Overview

-Precambrian: Bacteria/multicellular (algae, 0203)


-Paleozoic: 1st/2nd mass extinction (coal)


-Mesozoic: 3rd mass extinction/ Birds/dinos (rocky mnts.)


-Cenozoic: 5th mass extinction/ dinos die off (Himalayas, world wide, glaciation)

Mantle

molten rock or magma-- circulates by convection currents.

Asthenosphere

outer part of mantle-- semi molten--ductile

Lithosphere

Brittle, outermost layer. Includes the crust.

Divergent Plate Boundary

Moving apart, causes seafloor spreading

Convergent Plate Boundary

Coming together, ocean peaks/ iron crust

Transform fault Boundary

Slide by eachother

Describe the Rock cycle

-Igneous rock


-Metaphoric rock


-Sedimentary rock

Composite (strato) Volcanoes

They are tall, symmetrically shaped, steep sides, and are built of alternating layers of lava flows, volcanic ash, and cinders.


EX:


-Mount Fiji


-Mount St. Helens

Shield Volcanoes

Are tall, broad, with flat rounded shapes, and are known to be very large. They have low slopes and have big craters at their summits.


EX:


-Mauna Loa


-Kilauea

Water molecules

- Polar Covalent


- unequal pull on e-

Eukaryote Organisms

have a nucleus

Prokaryote

Do not have a nucleus

What are the types of energy

-Potential: is the energy stored in an object due to its position in a force field or in a system due to its configuration.


-Kinetic: energy of an object is the energy that it possesses due to its motion


-Chemical:is the potential of a chemical substance to undergo a transformation through a chemical reaction or, to transform other chemical substances.

1st and 2nd law of dynamics

1st: In an isolated system, energy can only be transformed, not created or destroyed. In other words, when energy passes, as work, as heat, or with matter, into or out from a system, its internal energy changes in accord with the law of conservation of energy.


2nd: In a natural thermodynamic process, the sum of the entropies of the participating thermodynamic systems increases.

The Hydrologic Cycle

-Transpiration


-Evaporation


-Run-off


-Ground water

The Nitrogen Cycle

-Fixation


-mineral fixation


-ammonification


-nitrification


-denitrification

Positive feedback loops


loops enhance or amplify changes; this tends to move a system away from its equilibrium state and make it more unstable.

Negative feedback loops

tend to dampen or buffer changes; this tends to hold a system to some equilibrium state making it more stable.

Homeostasis

Is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Examples of homeostasis include the regulation of temperature and the balance between acidity and alkalinity (pH).

Eutrophication

is the ecosystem response to the addition of artificial or natural substances, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.[1]One example is the "bloom" or great increase of phytoplankton in a water body as a response to increased levels of nutrients

Denitrification

is a microbially facilitated process of nitrate reduction (performed by a large group of heterotrophic facultative anaerobic bacteria) that may ultimately produce molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products.

Decomposition

is the process by which organic substances are broken down into a much simpler form of matter. The process is essential for recycling the finite matter that occupies physical space in the biome.

Transpirtation

is the process of water movement through a plant and its evaporation from aerial parts, such as from leaves but also from stems and flowers.

Assimilation

the conversion of nutrient into the fluid or solid substance of the body, by the processes of digestion and absorption

Ammonification

When a plant or animal dies or an animal expels waste, the initial form of nitrogen is organic. Bacteria or fungi convert the organic nitrogen within the remains back into ammonium (NH4+), a process called ammonification or mineralization.

Nitrogen fixation

is a process in which nitrogen (N2) in the atmosphere is converted into ammonium (NH4+).[1] Atmospheric nitrogen or molecular nitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds. The fixation process frees up the nitrogen atoms from their triply bonded diatomic form, N≡N, to be used in other ways.

Legislation NEPA


National Environmental Policy Act

is a United States environmental law that established a U.S. national policy promoting the enhancement of the environment.

Clean Air Act


is a United States federal law designed to control air pollution on a national level.

Clean Water Act

is the primary federal law in the United Statesgoverning water pollution.

Safe Drinking Act

is the principal federal law in the United States intended to ensure safe drinking water for the public.

CERCLA


Comprehensive Environmental Response, Compensation, and Liability Act

This law created a tax on the chemical and petroleum industries and provided broad Federal authority to respond directly to releases or threatened releases of hazardous substances that may endanger public health or the environment.

Montreal Protocol

is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.

RCRA


Resource Conservation Recovery Act

are to protect human health and the environment from the potential hazards of waste disposal, to conserve energy and natural resources, to reduce the amount of waste generated, and to ensure that wastes are managed in an environmentally sound manner.