Environmental Studies

Question 1

Individual

Answer 1

Is a single organism who is able to exist independently

Question 2

Population

Answer 2

A group of organisms that are the same species and occupy the same area and can breed with one another

Question 3

Community

Answer 3

a group of different species/ populations that interact with one another in a particular area

Question 4

ecosystem

Answer 4

an interaction between different species(a community) of organisms and their environment

Question 5

The 5 main effects(parameters) of population size

Answer 5

1. Immigration
2. Emigration
3. Natality
4. Mortality
   5.Resource available

Question 5

The 3 types of limiting factors

Answer 5

1. Density-dependent variables
2. Density -independent variables
3. Environmental resistance

Question 5

The concept of carry capacity

Answer 5

Indicates whether a population is stable or unstable

Question 6

Important of random sampling

Answer 6

for a realistic reflection of the distribution

Question 6

The two ways to estimate a population size

Answer 6

1. Direct & indirect method
2. Mark-recapture methods

Question 6

A predator-prey relationship (Predatation)

Answer 6

Is where one specie (predator) kills & eat another specie (prey)

Question 6

The 3 examples of a predator-prey relationship

Answer 6

1. Lion-zebra
2. Aphid-ladybird
   3.Shark-fish

Question 7

Food web

Answer 7

is a system that connects all food chains in a ecosystem

Question 8

The food web & socialism of organisms function

Answer 8

It contribute to the health & balance of the ecosystem

Question 9

Ecological succession

Answer 9

A predictable pattern of gradual change over time in a type of species in a community following a disturbance