Things I Need To Know For Final Exam Sem 1

Question 0

Exponential growth

Answer 0

Growth in which the rate of increase is a constant percentage of the current size, or the growth occurs at a constant rate per time.

Question 1

6 Themes of Environmental Science

Answer 1

1. Human Population Growth
2. Sustainability of the human population and nature
3. The global perspective
4. An Urbanizing world
5. The connections between people and nature
6. Science and Values

Question 2

Environmental Unity

Answer 2

A principle of environmental sciences that states that everything affects everything else mean that a particular course of action could lead to a string of events, or you can’t do only one thing

Question 3

Uniformitarianism

Answer 3

The principal stating that processes operate today operated in the past, therefore observations of processes today can explain events that occurred in the past and leave evidence

Question 4

Gaia Hypothesis

Answer 4

A hypothesis that states that life has greatly altered the earths environment globally for more than 3 billion years and continues to do so and that these changes benefit life

Question 5

Homeostasis

Answer 5

The ability of a cell or organism to maintain a constant environment. Resulting in a state of dynamic equilibrium

Question 6

Plate Tectonics

Answer 6

A model of global tectonics that suggests that the outer layer of the earth or lithosphere is composed of several large plates that move relative to one another

Question 7

Demography

Answer 7

The study of populations, especially their patterns in space and time

Question 8

Population Dynamics

Answer 8

The causes of changes in population size

Question 9

Carrying Capacity

Answer 9

The maximum population that can be maintained by a certain habitat

Question 10

Overshoot

Answer 10

When one part of a system exceeds the carrying capacity

Question 11

Logistic Growth

Answer 11

S-shaped curve, a small population grows rapidly, but the growth rate slows down, and the population eventually remains constant.

Question 12

Density Dependent Factors

Answer 12

Factors whose effects on a population change with population density

Question 13

Density Independent Factor

Answer 13

Changes in the size of a population due to factors that are independent of the population size

Question 14

Limiting Factors

Answer 14

The single requirement for growth available in the least supply in comparison to the need of an organism

Question 15

Biotic

Answer 15

Living

Question 16

Abiotic

Answer 16

Non living

Question 17

Niche

Answer 17

The role of an organism

Question 18

Trophic Levels

Answer 18

Producers , primary, secondary, tertiary consumers, (decomposers)

Question 19

Food chain

Answer 19

The linkage of who feeds on whom

Question 20

Food web

Answer 20

A network of who feeds on whom/diagram

Question 21

Species

Answer 21

A group of individuals that share from a common gene pool

Question 22

Genetic drift

Answer 22

A Change in the gene frequency that is not caused by natural selection

Question 23

7 Justifications when placing value on an environment

Answer 23

Utilitarian 
Ecological
Aesthetic 
Recreational
Inspirational
Creative 
Moral

Question 24

Utilitarian

Answer 24

Aspects of the environment are value able because it benefits people

Question 25

Ecological

Answer 25

An ecosystem is necessary for species survival

Question 26

Aesthetic

Answer 26

Appreciation of beauty in nature

Question 27

Recreational

Answer 27

Appreciation of beauty in nature

Question 28

Inspirational

Answer 28

Widespread reason people love nature

Question 29

Creative

Answer 29

Nature is often an aid to human creativity

Question 30

Moral

Answer 30

Various aspects of the environment have the right to exist

Question 31

Gene

Answer 31

A single unit of genetic information

Question 32

Natural Selection

Answer 32

A process by which organisms whose biological characteristics better fit them to the environment are represented by more descendents in future generations than those whose characteristics are less fit for the environment

Question 33

Evolution

Answer 33

The peritibal changes that shape the appearance and functions of organisms over time

Question 34

Biodiversity

Answer 34

The variety of living organisms in an area