CH.4 Terms- Env Sci

4.5(2)
studied byStudied by 58 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/31

flashcard set

Earn XP

Description and Tags

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

32 Terms

1
New cards
Ecology
the study of how organisms interact with each other and their non-living env.
2
New cards
Species
a group of individuals that are closely related and can mate to produce fertile offspring.
3
New cards
Population
members of the same species that live in the same place at the same time.
4
New cards
Community
all of the diff't populations in a certain area.
5
New cards
Ecosystem
all of the living things and their physical env within a particular area.
6
New cards
Biotic factors
Parts of an ecosystem that are living or used to be living
7
New cards
Abiotic Factors
parts of an ecosystem that were never alive
8
New cards
Habitat
The specific environment in which an organism lives
9
New cards
Resource
anything an organism needs to survive and reproduce.
10
New cards
Pop. density
A measure of how crowded a population is
11
New cards
Pop. distribution
How organisms are arranged within an area
12
New cards
Random distribution
Organisms arranged in no particular pattern
13
New cards
Uniform distribution
Organisms evenly spaced
14
New cards
clumped distribution
Organisms grouped near resources
15
New cards
What is the most common type of distribution in nature?
clumped
16
New cards
sex ratio
how many males vs. females there are in a population
17
New cards
mortality
the rate at which individuals die in a population
18
New cards
natality
the rate at which individuals are born
19
New cards
Immigration-
individuals moving into a population.
20
New cards
Emigration-
individuals moving out of a population.
21
New cards
Migration-
seasonal movement into and out of an area.
22
New cards
Carrying capacity-
the largest pop. size a given env. can sustainably support or handle.
23
New cards
Density-dependent factors:
factors that increase with an increase in population density.
24
New cards
Density-independent factors:
factors that do not change with population density.
25
New cards
Biotic potential-
The maximum number of offspring an organism can produce in ideal conditions.
26
New cards
gestation time-
how long it takes for embryo or fetus to develop and be "born"
27
New cards
generation time-
the time from an organism's birth to the time it has its own offspring
28
New cards
What type of population distribution would you expect to see in territorial animals?
uniform
29
New cards
Is a dead organism biotic or abiotic?
biotic
30
New cards
Sunlight is an example of an _______ factor.
abiotic
31
New cards
A flood killing plants in an area would be a density _________ cause of death.
independent
32
New cards
Disease spreading quickly through a packed population of organisms would be an example of a density _____ cause of death.
dependent