Definition: This term describes fish that live in freshwater but travel to the ocean to reproduce.

Example: Eels are known to be catadromous, as they migrate to the sea to spawn.

Definition: A type of tree that usually has heart-shaped leaves and produces large clusters of white flowers, commonly found in North America.

Example: The catalpa tree in the park is known for its beautiful flowers in the spring.

Definition: Relating to a group of primates that includes Old World monkeys, apes, and humans, which have nostrils that are close together and point downward or forward.

Example: The catarrhine species are known for their unique facial structure and social behaviors.

Definition: A type of primate that includes monkeys, apes, and humans, characterized by their downward-facing nostrils and typically found in Africa and Asia.

Example: The catarrhine species are known for their complex social structures and behaviors.

Definition: A sudden and serious event that causes great damage or suffering.

Example: The earthquake was a catastrophe that affected thousands of people.

Definition: Relating to a sudden and severe disaster or event that causes great damage or suffering.

Example: The earthquake had catastrophic effects on the city, destroying many buildings and displacing thousands of people.

Definition: The belief that the Earth's geological features are shaped by sudden, violent events, such as natural disasters, rather than gradual processes.

Example: Many scientists support the theory of catastrophism to explain the formation of certain geological structures.

Definition: A type of songbird found in North America, known for its gray color and distinctive black cap on its head.

Example: The catbird sang beautifully in the early morning light.

Definition: A type of climbing plant that has sharp thorns, often found in wooded areas, and produces small berries. It is known for its heart-shaped leaves and can be difficult to walk through due to its prickly nature.

Example: We had to be careful while hiking because the catbrier was thick and full of thorns.

Definition: A type of plant that has sticky stems and flowers, often found in the Northern Hemisphere, which can trap small insects.

Example: The catchfly blooms beautifully in the garden, attracting many insects.

Definition: A type of shrub or plant that has small spines and produces clusters of white to yellow flowers, followed by curved pods containing shiny black seeds. It is commonly found in the West Indies and Florida.

Example: The catclaw plant is known for its beautiful yellow flowers and thorny branches.