Question 1
Some of the aspects of climate change are: increase of water temperature, desertification (increase of temperature and air that's dry becomes dryer), melting of the ice caps. Temperature has raised by 0.85 since 1870 cause of our actions. The Paris agreement want to limit the global temperature to 1.5 degrees celsius compared to pre-industrial times.

Question 2   
When the air gets warm (co2/pollution..) it all goes up into the atmosphere and comes down as acidic gasses. The oceans absorb this gas making the oceans warmer (the biggest majority of all this carbon is absorb by the oceans). This, plus the warming of the air around the poles will create a loss of habitat as well as rising of the oceans. Le niveau des mers a augmenté de 20 cm depuis 1900.  Les scientifiques pensent que d'ici 2100, le niveau des mers augmentera de 30 à 90cm (selon le rapport du GIEC).
 | http://www.universalis-edu.com/encyclopedie/changement-climatique/

Question 3
Ocean acidification is when we release carbon into the air and not all of it can stay in the atmosphere and a third of it goes into the oceans.  When oceans get acidic it affects the reproduction of plankton which is at the very bottom of the food chain as well as it provides oxygen in the oceans and air. The ocean acidification destroys also coral reefs and the coral reefs are the home of so many living things.

Question 2
Dying coral has an impact on sea life because it’s the habitat of fishes, starfish and shells. They will all get poisoned because of the ocean acidification (oceans get warmer)!

condition: Condition est un mot utilisé pour décrire une certaine position d'une situation.

biodiversité: La biodiversité est tout ce qui vit vraiment les uns avec les autres dans un écosystème.

gaz à effet de serre: C'est un type de gaz qui se trouve dans l'atmosphère et emprisonne la chaleur qui élève le température de la planète.