World Biomes

The lesson “Food Chains”, comes from a natural science course. Natural sciences, such as biology, deal with nature and the physical world. To get ready for the lesson on food chains, you need to understand certain terms.

Ecology lecture. “Food Chains.”

Today I’m going to discuss some concepts and terminology related to ecology, specifically, ecosystems and, the classifications of organisms that live there, and, the food chains and food webs within ecosystems.

OK, let’s start with the definition of system: a system is a group of  elements or parts that work together. In any system, those different parts rely, that is, they depend on each other.

Money – buying, selling and paying

A.      Personal finance

Sometimes in a shop they ask you: ‘How do you want to pay?’

You can answer: ‘Cash / By cheque / By credit card.’

In a bank you usually have a current account, which is one where you pay in your salary and then withdraw money to pay your everyday bills. The bank sends you a regular bank statement telling you how much is in your account. You may also have a savings account where you deposit any extra money that you have and only take money out when you want to spend it on something special. You usually try to avoid having an overdraft or you end up paying a lot of interest. If your account is overdrawn, you can be said to be in the red (as opposed to in the black or in credit).

Sometimes the bank may lend you money – this is called a bank loan. If the bank (or building society) lends you money to buy a house, that money is called a mortgage.

Can you name this country?

This country is in South Africa. It is very long  and  narrow.  Its population numbers more than 14 million. The climate is warm in the winter and cold in the summer. The main geographical features are the Andes Mountains, the many islands near the southern coast, and the large northern desert. In the desert, years can go by without rain.

The main industries are copper mining, paper making, and fishing. Two of this country’s writers are world famous. In 1945 poet Gabriela Mistral was the first Latin American writer to win the Nobel Prize. In 1971 the prize went to Pablo Neruda. The main language is Spanish, and main religion is Roman Catholicism. The capital city is Santiago, in the Central Valley.

( Write similar information about another country. First make notes, and then use the notes to write sentences on your own paper. )