An individual living thing that can react to stimuli, reproduce, grow and maintain homeostasis.
New cards
8
Species
A group of living organisms of similar individuals capable of exchanging genes.
New cards
9
Population
How many of one species of an organism.
New cards
10
Ex:Deer(how much of a deer is an organism in a population)
New cards
11
Community
Living things in an community. Groups of different species living together in a particular place with a potential for interacting with one another.
New cards
12
Example:Deer
New cards
13
Ecosystem
Living and non-living things
New cards
14
Example: Rock, deer
New cards
15
Roles in an ecosystem
Niches- specialist vs generalist
New cards
16
R vs K Selected Species, Keystone species, Invasive Species, Endangered species
New cards
17
Niches(Specialist vs Generalist)
Each species occupies a niche in the community.
New cards
18
A niche is the role that species play and includes the type of food it eats, where it lives, where it reproduces, and its relationships with other species.
New cards
19
Generalist
Can thrive in a wide variety of environmental conditions and can make use of a variety of different resources. (Heterotroph)
New cards
20
Specialist
Only can range in few environments and has a limited diet.
New cards
21
R Species
-Many, usually small, offspring
New cards
22
-Little or no parental care
New cards
23
-Massive deaths of offspring
New cards
24
-Insects, bacteria, algae, Dandelions
New cards
25
K-Species
Reproduce later in life
New cards
26
-Few offspring with long life spans
New cards
27
-Long time to maturity
New cards
28
-Mother puts in a high amount of energy earing for young.
New cards
29
-Apes, Elephants
New cards
30
Keystone Species
A species that plays an important role in allowing the rest of the ecosystem to function.
New cards
31
*If you remove an organism from a ecosystem, the ecosystem will collapse.*
New cards
32
Invasive Species
A species that was not originally a part of an ecosystem, but was brought in by humans and out-compete the native species.
New cards
33
Ex: Species coming and adapting to a new envrionment.
New cards
34
Endangered Species
A species of an animal or plant that will become extinct.
Toxic substances become increasingly concentrated withn living organisms as they move up each step of the food chain.
New cards
65
*The more you go up the food chain, the more toxins you have in your body.*
New cards
66
Evolution and Natural Selection
How does it work? As evolution happens, organisms with traits tend to reproduce through the process of natural selction.
New cards
67
Evolution
Over a lon.g period of time, species differentiate and change in response to their environment. Eventually, new species are created.
New cards
68
Natural Selection
This is the way natural selection happens. Organisms with traits that make them more successful end up having more offspring, and those traits dominate in future generaions.
New cards
69
Ecosystem Services
a) What products do we get from the healthy ecosystem?
New cards
70
b) What life functions we get from the healthy ecosystem?
New cards
71
What products do we get from the healthy ecosystem?
Natural resources, water
New cards
72
What life functions do we get from the healthy ecosystem?
Oxygen,
New cards
73
Long Term Change
Ecological Succession, Primary, Secondary, Pioneer Species, and Climax Community
New cards
74
Ecological Succession
A process of ecosystem recovering
New cards
75
Primary Succession
Occurs when the ecosystem must start from bare rock. (From scratch)
New cards
76
Ex:like a volcano erupts on a land(Pompeii)
New cards
77
Secondary Succession
Occurs when there is a disturbance that leaves some biotic factors behind.
New cards
78
Ex: Fire leaves some plants alive and from that natural rescource, certain factors can start to adapt.
New cards
79
Pioneer species
First species to colonize after a disruptive ecosystem.
New cards
80
Ex: Volcano erupt, magma covers everything. First plant to grow, is a pioneer species