Repels is a word that is used to describe something that makes someone want to avoid or oppose it. Repels can be a physical object or a person.
A nanometer is a billionth of a meter. This means that a nanometer is about the size of a grain of sand.
When two things are sandwiched, they are put between two other things. This can be a physical object, like a sandwich, or it can be a situation, like two people who are fighting.
A bilayer is a type of paper or plastic that has two layers. The top layer is the outer layer, and the bottom layer is the inside layer.
Fluidity is the ability to move and change easily. Sometimes people use the word to describe the way that a person or group of people behaves.
Endocytosis is the process by which cells take in materials from the outside world. Endocytosis happens when cells secrete a fluid called cytoplasm, which surrounds small particles. These small particles are then taken in by the cell.
To engulf something is to completely surround and control it. The water can engulf the ship, and the army can engulf the city.
When you have two layers of something, the first layer is on the outside and the second layer is on the inside. This is often used to describe the structure of a skin or a cake.
Fertilizes is a word that is used to describe the act of adding nutrients to something. When you fertilize your plants, you are giving them the nutrients that they need in order to grow.