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Natural sciences

Ecosystems and the environmental balance

Educator section

Memorandum

(a) A forest is a stretch of land that is covered with dense trees, shrubs, ferns, etc. and animals. These plants and animals live together in the dense bushes.

Assignment 1:

f) tree (producer)

mouse (primary consumer)

owl (secondary consumer)

jackal (tertiary consumer)

Leaner section

Content

1. Introduction

All living things on earth and the way in which they influence (or are influenced by) the environment form an ecosystem.

The word ecosystem is derived from the Greek word "oikos", which means house or household. Just like members of a family live together, support and influence each other and the environment (and are in turn affected and influenced by it), so organisms live together, reproduce and are dependent on each other for food. They have a close relationship with the soil, sun, water and air.

Activity: to understand clearly what an ecosystem is [lo 1.3]

Let's study an example of an ecosystem:

(a) What is a forest?____________________________________________________

_____________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

A forest is much more than a large area of land covered with trees. Shrubs, vines, ferns, mosses and toadstools live in the shade of trees. The forest also swarms with birds, mammals, reptiles, amphibians and insects. A forest is therefore all these plants and animals living together.

The animals depend on plants for food, while plants use sunlight, carbon dioxide, water and minerals to make food for themselves and other organisms in the forest.

The living organisms (plants and animals) together with the non-living environment (air, water, sun and soil) constitute an ecosystem.

(b) Tabulate an example of each of the following found in a forest.

Species My example of. . .
bird __________________________
mammal ________________________
reptile ________________________
insect ________________________
amphibian ________________________

(c) Now sketch these five examples in the drawing to complete it!

(d) The Ecosystem concept

The organism-environment interaction leads to the ecosystem concept, elaborating the interaction between matter, energy and organism.

An ecosystem

(e) How big is an ecosystem?

An ecosystem can be of any size, from a puddle of water on the pavement to the entire rain forest in the Amazon or an even larger area.

A forest with its trees, plants, insects, birds, etc., is an ecosystem of certain kinds of organisms that occupy a certain environment. On the other hand, a rock in the shade of a forest with its mosses and other rock plants, insect larvae and centipedes, is also an ecosystem. The system is therefore integrated, with parts that are intimately related to one another. Anything affecting a part of the system will also affect the rest.

Assignment 1:

(f) Study the sketch of the forest ecosystem below:

Name the:

producer: _____________________________________________________________

primary consumer: _____________________________________________________

secondary consumer: ___________________________________________________

tertiary consumer: ______________________________________________________

Primary means first.

Secondary means second or less important.

Tertiary means the third in this case.

2. The ecosystem

is the living organisms together with the ____________________________________

indivisibly linked and mutually interactive.

The living part can be divided into:

(a) food producers - mainly green plants

(b) food consumers - which are macro consumers (animals which eat other organisms)

or

decomposers (bacteria or fungi which break up dead organisms)

Assessment

Learning Outcome 1: The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

Assessment Standard 1.3: We know this when the learner evaluates data and gives feedback on findings.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natural sciences grade 6. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11079/1.1
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