biological

Describes something that has very little color or is much lighter than usual. It is often used to describe a person's face when they are ill or a color that is mixed with a lot of white.

The lungs are two organs inside your chest that you use to breathe. They bring oxygen into your body and remove carbon dioxide when you breathe out.

Relating to the hot regions of the Earth near the equator. It describes weather that is very warm and wet, or plants and animals that come from these areas.

A trader is a person whose job is to buy and sell goods, stocks, or other items for profit. They can work in a small local market or on large international financial exchanges.

Describes something that is located, happens, or is used inside a building rather than outside. It is an adjective used before a noun to talk about activities or objects protected from the weather.

A threshold is the physical area at the bottom of a doorway that you step over to enter a room or building. It also refers to the level or point at which something starts to happen or changes.

A tribute is something that you say, do, or give to show your respect and admiration for someone. It is often a public act used to honor a person's life, work, or memory.

Used to describe a person who is older than another, especially within a family. It is also used to refer to people who have a high status or more experience because of their age.

Relating to Russia, its people, its language, or its culture. It describes things that come from or are connected to the largest country in the world.

Located in or coming from the direction between south and east. It describes a place, a region, or a wind that is in the corner between the bottom and the right on a map.