Question

What are foraminifera and what is their relationship to the K-T boundary?

a) Microscopic marine organisms with calcium carbonate shells.
b) Large land-dwelling mammals during the K-T boundary.
c) A type of rock layer found at the K-T boundary.
d) A group of ancient reptiles that existed during the K-T boundary.

Answer 1

Foraminifera are microscopic marine organisms with calcium carbonate shells. They are not directly related to the K-T boundary, but their fossils can be used as indicators of changes in global weather patterns and pollution.

Step-by-step explanation:

Foraminifera are microscopic marine organisms with calcium carbonate shells. They are unicellular protists that are commonly found in marine or freshwater habitats. They have porous shells, called tests, which are built from organic materials and hardened with calcium carbonate. Foraminifera are not directly related to the K-T boundary, but their fossils can be used as indicators of changes in global weather patterns and pollution. The K-T boundary is a boundary between the Cretaceous and Paleogene periods, marked by a mass extinction event, including the extinction of the dinosaurs.