Ecology

C'est une question de grammaire très importante :

1. Because est une conjonction. Elle doit être suivie d'une phrase complète (Sujet + Verbe). Exemple : We are worried because the climate is changing.
2. Because of est une préposition. Elle doit être suivie d'un nom ou d'un groupe nominal (pas de verbe). Exemple : We are worried because of climate change.

💡 À retenir : Si tu vois un verbe juste après, utilise because. Si tu vois juste un nom, utilise because of.

Pour utiliser "so that" (pour que), tu dois suivre cette structure :

1. Commence par l'action principale.
2. Ajoute "so that".
3. Ajoute un nouveau sujet + un auxiliaire de modalité (souvent can, could, will ou would) + le verbe.

Exemple :

• Action : We plant trees...
• But : ...so that we can produce more oxygen.

💡 À retenir : Contrairement à "to" qui est suivi d'un verbe, "so that" demande toujours un sujet et un auxiliaire (can/will).

Pour réussir tes examens, concentre-toi sur ces trois groupes :

1. Les problèmes : Pollution, Global warming, Deforestation, Endangered species.
2. Les causes : Carbon footprint, Fossil fuels, Greenhouse effect.
3. Les solutions : Renewable energy, Recycling, Reforestation, Sustainable development.

💡 À retenir : Apprends ces mots par "familles" (problème $\rightarrow$ cause $\rightarrow$ solution) pour mieux rédiger.

1. Renewable energy : Energy from sources that never run out, like the sun (solar), wind, or water. It is clean for the environment.
2. Non-renewable energy : Energy from sources that will eventually run out, like coal, oil, and gas (fossil fuels). They cause a lot of pollution.

💡 À retenir : Renewable = Green/Clean. Non-renewable = Dirty/Limited.

Global warming is the gradual increase in the Earth's temperature. It is mainly caused by the greenhouse effect, where gases like $CO_2$ trap heat in the atmosphere. This leads to melting ice caps and extreme weather.

💡 À retenir : Global warming = Increase in temperature + $CO_2$ emissions.

A carbon footprint is the total amount of greenhouse gases (including $CO_2$) produced by our human activities (driving cars, using electricity, eating meat). The goal is to reduce it to protect the planet.

💡 À retenir : Carbon footprint = The impact of your actions on the environment.

Deforestation is the permanent removal of trees to make room for agriculture, cities, or industry. It is dangerous because trees absorb $CO_2$ and provide homes for animals.

💡 À retenir : Deforestation $\rightarrow$ Less $CO_2$ absorption $\rightarrow$ More global warming.

Endangered species are animals or plants that are at risk of disappearing forever (extinction). This happens because of habitat loss, pollution, or hunting.

💡 À retenir : Endangered = At risk of extinction.

You can use three main ways:

1. To + verb : I recycle to save the planet.
2. In order to + verb : We use solar energy in order to reduce pollution.
3. So that + subject + can : We protect forests so that animals can live safely.

💡 À retenir : "To" and "In order to" are for short, direct goals. "So that" is for more complex sentences.

The greenhouse effect is a natural process where certain gases in the atmosphere trap the sun's heat. However, human activities increase these gases, making the Earth too hot.

💡 À retenir : Greenhouse effect = Heat trapped by gases like $CO_2$.

Sustainable development means meeting our needs today without destroying the ability of future generations to meet their own needs. It balances economy, society, and environment.

💡 À retenir : Sustainable = Long-term/Protecting the future.

We can reduce pollution by:

1. Using renewable energy instead of fossil fuels.
2. Recycling our waste (plastic, paper, glass).
3. Using public transport or bicycles to reduce $CO_2$.
4. Planting more trees.

💡 À retenir : Always suggest practical actions (Recycle, Plant, Use renewable energy).