Ecosystems Flashcards

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1
Q

Atmosphere

A

Atmosphere refers to the gases surrounding a star or planetary body held in place by gravity. A body is more likely to retain an atmosphere over time if gravity is high and the temperature of the atmosphere is low

Ocean Atmosphere System
The oceans and the atmosphere are the two large reservoirs of water in the Earth’s hydrologic cycle. The two systems are intricately linked to one another and are responsible for Earth’s weather and climate. The oceans help to regulate temperature in the lower part of the atmosphere

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2
Q

lithosphere

A

The lithosphere is the solid outer section of Earth, which includes Earth’s crust (the “skin” of rock on the outer layer of planet Earth), as well as the underlying cool, dense, and rigid upper part of the upper mantle.

Oceanic lithosphere consists mainly of mafic crust and ultramafic mantle (peridotite) and is denser than continental lithosphere, for which the mantle is associated with crust made of felsic rocks. Oceanic lithosphere thickens as it ages and moves away from the mid-ocean ridge.

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3
Q

hydrosphere

A

Oceans, rivers, lakes, and clouds are all typically included in the hydrosphere. The watery parts of our planet, including vapor that hovers above the Earth’s surface and water that’s underground, make up its hydrosphere.

The hydrosphere is the liquid water component of the Earth. It includes the oceans, seas, lakes, ponds, rivers and streams. The hydrosphere covers about 70% of the surface of the Earth and is the home for many plants and animals.

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4
Q

abiotic

A

non-living part of the physical and chemical parts of an environment. Examples of this would be the sun and dirt.

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5
Q

biotic

A

relating or resulting in living things. Most of the time this refers to the environment. Some examples of these would be animals or plants.

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6
Q

organism

A

any at less single celled thing that shows the properties of life

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7
Q

population

A

a group of organisms that belong to the same species

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8
Q

community

A

groups of different organisms living together

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9
Q

ecosystem

A

community of interdependent organisms in an environment

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10
Q

herbivore

A

A herbivore is often defined as any organism that eats only plants.

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11
Q

carnivores

A

An animal or plant (particularly insect- and invertebrate-eating plants) that requires a staple diet consisting mainly or exclusively of animal tissue through predation or scavenging.

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12
Q

omnivorves

A

An omnivore is a kind of animal that eats either other animals or plants. Some omnivores will hunt and eat their food, like carnivores, eating herbivores and other omnivores.

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13
Q

decomposer

A

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition. Like herbivores and predators, decomposers are heterotrophic, meaning that they use organic substrates to get their energy, carbon and nutrients for growth and development.

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14
Q

food chain

A

a linear illustration that represents the step sequence of who eats whom in the biosphere.

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15
Q

producer

A

Producers are organisms that can make their own energy through biochemical processes, which are just processes in living things that involve chemical reactions

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16
Q

primary

A

primary consumer feel on autotrophs

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17
Q

secondary

A

feeds on primary consumers

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18
Q

tertiary

A

Tertiary consumers can be either fully carnivorous or omnivorous. Humans are an example of a tertiary consumer. Secondary and tertiary producers both must hunt for their food so they are referred to as predators

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19
Q

evaporation

A

is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase

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20
Q

condensation

A

water which collects as droplets on a cold surface when humid air is in contact with it

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21
Q

transpiration

A

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

22
Q

solar radiation

A

is radiant energy emitted by the sun from a nuclear fusion reaction that creates electromagnetic energy

23
Q

photosynthesis

A

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms’ activities

24
Q

respiration

A

a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.

25
Q

decay

A

rot or decompose through the action of bacteria and fungi

26
Q

total organic carbon

A

Total organic carbon is the amount of carbon found in an organic compound

27
Q

heterotrophy

A

heterotroph is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are primary, secondary and tertiary consumers, but not producers

28
Q

chemical carbon storage as refractory doc

A

is the fraction of total organic carbon operationally defined as that which can pass through a filter

29
Q

nitrogon fixation

A

is a process by which molecular nitrogen in the air is converted into ammonia (NH3)

30
Q

nitrification

A

Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate

31
Q

remineralization

A

is the process by which organic N is converted to plant-available inorganic forms

32
Q

denitrification

A

the loss or removal of nitrogen or nitrogen compounds specifically

33
Q

what is a food web

A

many food chains all put together

34
Q

species

A

a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted by a Latin binomia

35
Q

top level consumer

A

Apex predators by definition have no predators and are at the top of their food chains

36
Q

trophic levels

A

how far an organism is from the original energy source

37
Q

taxonomy

A

In taxonomy, there are seven main taxa arranged in
order to group organisms by their similarities
according to structure and/or evolutionary history.

the order is kingdom, phylum,class,order,family, genus, species

38
Q

adapation

A

a change in characteristic of an organism which increases its chances of survival. Variation in a trait may give adaptive advantage to a species

39
Q

charles darwin

A

Natural Selection – Charles Darwin’s theory of
evolution. Survival of the fittest. Organisms
with the most favorable traits will survive and
pass those traits onto their offspring.

40
Q

favouritable traits

A

those who are able to adapt better than others to climate change, environmental pressures and others tend to survive better

41
Q

hertiable traits

A

Heritability is a measure of how well differences in people’s genes account for differences in their trait

42
Q

survival of the fitest

A

who has the better genes will most likely survive better in the end

43
Q

photosynthesis and the ecosystem

A

food webs always begin with autotrophs

through photosynthesis, autotrophs capture the sun’s energy and store it as glucose

formula co2+h2o=light =c6h12o6+o2

44
Q

cellular respiration

A

all organism, including plants, undergo cellular respiration to use the energy stored in their food.

45
Q

evolution

A

evolution is the process by which populations of living things change over a series of generations

46
Q

analogous features

A

are similar in appearance and in function but do not appear to have the same evolutionary origin ex. bird wing and insect wing

47
Q

embryology

A

In the early weeks of development, human embryos have a
tail and gill slits, similar to those in chicken and fish embryos.
The tail serves no function and later forms a tailbone. The gill
slits become bones of the inner ear.

48
Q

vestigial features

A

Vestigial Features are structures that serve no
useful function. Eg. appendix

Evolution says that vestigial features once
served some function in an ancient ancestor.

49
Q

biochemical evidence

A

similar chemicals in cells suggest common ancestors

50
Q

carl linnaeus

A

Classification of Organisms (developed by Carl
Linnaeus 1707-1778)

The science of classifying organisms is called
taxonomy.

Classification systems have two main purposes:

  1. identifying organisms
  2. providing a basis for recognizing natural
    groupings of living things

Binomial Nomenclature – a method of naming
organisms by using two names-the genus name and
the species name. Scientific names are italicized.