Why Alien Life Would be our Doom - The Great Filter

Important Vocabulary Words From The Video


A multicellular organism is one that contains more than one cell. This means that the organism is able to divide into different parts, and to function as a whole.

  • Multicellular organisms are found in all sorts of places, from the ocean floor to the inside of a human body.
  • Multicellular organisms are very important because they are able to adapt to new environments.

A lifeform is any type of creature that lives on Earth. This includes animals, plants, and even microbes.

  • The lifeform was a fungus.
  • The lifeform was a bacterium.

To colonize is to take over a new area and make it part of your own country or empire. Sometimes this is done by force, but other times it is done by convincing the people there to join your country or empire.

  • The settlers tried to colonize the new land, but they were unsuccessful.
  • The government tried to colonize the new land, but the people were resistant.

Devouring something means to eat or drink it completely. If you devour an entire cake, you've eaten it all.

  • She devoured the cake in one bite.
  • He devoured the whole bowl of cereal in one sitting.

A fistfight is a fight between two people using their fists. It can be very violent, and it's usually a very dangerous situation.

  • The fight started when one of the students punched the other one in the face.
  • The fight started when one of the students tried to steal the other student's purse.

When there is a roadblock, police or other officials are stopping people and asking them to show their identification. This is usually done to check for illegal immigrants or to collect taxes.

  • The roadblock was set up to catch people who were illegally crossing the border.
  • The roadblock was set up to collect taxes.

Timescales are a way of measuring how long something will take. They are usually measured in hours, days, weeks, or months.

  • It will take them two weeks to process the data.
  • The project is scheduled to be completed in six months, but it may take longer than that.

When something is uninhabitable, it is not able to be lived in or used. This can be because of a natural disaster, war, or some other problem.

  • The city was completely uninhabitable after the earthquake.
  • The war made the area completely uninhabitable.