QUESTIONS

a. What do you understand by soil system and soil ecosystem equilibrium?

b.Refering to a named ecosystem, show how 2 of the following pairs of ecosystem components are interelated

i. Climate and soil

ii. Climate and vegetation

iii. Soils and vegetation

    An ecosystem is said to be in equilibruim when the inputs are almost equal to the output in other words. An equilibruim in an ecosystem refers to a situation where the biotic and abioic components are almost in a stable relelationship. 

   However, when a disequilibruim introduced in an ecosystem, a new equilibruim is re-establish either at a high level or at a lower levelAn equilibruim possesses the following characteristics

   Energy flow. The fact that the amount of energy turns to reduce from one biotuic level to another  as it flows, there is self regulation of orgaisms at each biotic level. In this way , an equilibruim is maintained.

  Nutrient re-cycline. The fact that nutrients are re-cycline permits an ecosystem to be maintained in equilibruim that is there is a possibility for nutrients that have been used to be re-used.

  The fact that there is adoption. The biotic components of the ecosystem develope mechanisms to adapt in their physical milliue permits an ecosystem to be maintained.

QUESTION 2

ANSWER

a.   Over population (refer)

carrying capacity means the maximum population that can be sustained by available resources of a particular region or country and this carrying capacities was introduced by Thomas Mathus

b. Population policies are legislations or laws used by governments in order to check population growth. This policies include;

• Punishment and incentives
• Legalisation of abortion
• Legalisation of sterelisation
• Giving allowances to small families
• Imposition of taxes on people with large families
• Legalisation o monogamy