Tertiary sector

The tertiary sector consists of activities that provide a service or sell a product. Examples of the tertiary sector are: transport, communications, shops, health care, education, sales, financial services or banks.

Many people work in the tertiary sector.

A mechanic repairing a car

An electrician working

A plumber working with tubes

Skilled jobs like electrician, mechanic or plumber have a lot of demand.

United kingdom will leave the European Union because they had a referendum. It's called the Brexit.

The European Environment Agency promotes responsible consumption in the EU. It encourages countries to trade in a responsible way. Are we doing enough? What do you think?

You can advertise products using different channels like television, internet, newspapers, magazines or even billboards.

Billboards are all over our city

More about ecosystems

Ecosystem

An ecosystem is a particular place that includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere). Ecosystems are the foundations of the Biosphere and they determine the health of the entire earth system.

There are terrestrial ecosystems and water ecosystems.

A pond is an example of a water ecosystem. A pond is a quiet body of water that is often small. It usually has a muddy bottom with aquatic plants around the edges. In a pond, the temperature changes with the air temperature and is relatively uniform.

An example of a terrestrial ecosystem could be a forest. 

Here you can see lots of animals: a deer, a rabbit, a wild boar, a fox, a mole, a woodpecker, an owl, a squirrel...

There are also fungi, vultures, trees, bushes, mice, worms, insects, bacteria, etc. 

Habitat

Think about your home. You probably woke up this morning in your bed. After getting dressed for school, you might have opened the refrigerator in your kitchen to grab some milk for your cereal and then you might have hugged your parents and pet your dog before heading out the front door.

These interactions all took place in your habitat. A habitat is the natural home or environment of a plant, animal, or other organism. It provides the organisms that live there with food, water, shelter and space to survive.

Retail

Retail

The process of selling consumer goods or services to consumers through multiple channels of distribution to earn a profit.

Hypermarket

It is a large store which combines a supermarket with a department store. The result is a expanding retail facility carrying a wide range of products under one roof, including full groceries lines and general merchandise.

Department store

It is a retail establishment offering a wide range of consumer goods in different product categories known as departments.

Supermarket

It is a self-service shop offering a wide variety of food, beverages, and household products organised into sections. 

Grocery Store

It is a small shop that primarily sells food, either fresh or preserved. 

There is also a lot of small shops like: bakery, butcher, fishmonger, hairdresser, etc. 

Interspecific relations

Interspecific relations

These are the relations between different species.

Mutualism

When both species benefit from the interaction. There are many examples. The bee and the flower. Bees fly from flower to flower gathering nectar, which they make into food, benefiting the bees. When they land in a flower, the bees get some pollen on their hairy bodies, and when they land in the next flower, some of the pollen from the first one rubs off, pollinating* the plant. This benefits the plants. In this mutualistic relationship, the bees get to eat, and the flowering plants get to reproduce.

Exploitation

When one species benefits from the interaction at the cost of the other species. Examples of this include:

predation – where one species huts and kills another species

parasitism - where a parasite lives in close association with and feeds off a host organism

Commensalism

When one species benefits from the interaction with no effect on the other species.

Most species of hermit crabs have long soft abdomens which are protected from predators by the adaptation of carrying around a salvaged empty seashell. As the hermit crab grows in size, it has to find a larger shell and abandon the previous one. It only uses empty shells, so the species that produced them are unaffected.

Antibiosis/Amensalism

When organisms interact and one species is unaffected but the other organisms have a negative effect. Penicillium is a group of common mould species, many of which produce antibiotics (such as penicillin). These antibiotics kill certain types of bacteria. The antibiotics produced by the moulds are simply a waste product, produced during their metabolism (as they break down their food). While the waste product kills bacteria, the penicillium are unaffected.

Competition

Where both organisms living in a similar niche are in competition for resources or space. This results in a negative outcome for each organism as it reduces the available resource for both parties.

The image (left) shows a lioness competing with some hyena for its kill.