Definition: A type of dark-colored mineral that is a form of mica, commonly found in certain types of rocks and made up of silicate compounds containing iron, magnesium, potassium, and aluminum.

Example: Geologists often study biotite to understand the formation of igneous rocks.

Definition: Connected to or having to do with a type of mineral called biotite, which is a common phyllosilicate mineral within the mica group.

Example: The geologist studied the biotitic layers of the rock formation to understand its composition.

Definition: A specific area that has similar environmental conditions and supports a particular group of plants and animals.

Example: The biotope in the nature reserve is home to many unique species of birds and plants.

Definition: Describing soil or sediment that has been disturbed or mixed by the activities of living organisms, such as burrowing animals or plant roots.

Example: The bioturbated soil showed signs of improved aeration and nutrient distribution.

Definition: The process where living organisms mix or stir up soil or sediment, often by burrowing into it.

Example: Worms and clams contribute to bioturbation by moving through the soil and mixing it up.

Definition: Describing an organism that gives birth to two offspring at one time.

Example: The biparous species is known for its ability to produce twins.

Definition: The ability or condition of walking on two feet instead of four or more.

Example: Humans are known for their bipedalism, which allows them to walk upright.

Definition: Referring to a type of leaf structure in plants where the leaflets are arranged on both sides of a central stem, resembling a feather that has been divided twice.

Example: The fern has bipinnate leaves that give it a delicate appearance.

Definition: Describing something that has both bilateral and radial symmetry, meaning it can be divided into similar halves in multiple ways.

Example: The starfish is an example of a biradial organism, as it exhibits both bilateral and radial symmetry.

Definition: A type of tree that has thin, peeling bark and is often found in northern regions. It has simple leaves and produces flowers in catkins. The wood from this tree is strong and is used for making furniture and other items.

Example: The birch tree in our backyard provides beautiful shade during the summer.

Definition: To hit someone with a branch of a birch tree, often as a form of punishment.

Example: The teacher decided to birch the misbehaving student as a lesson.