Final answer:
Mass extinctions in biodiversity have occurred five times throughout Earth's history and have had a significant impact on the development of biodiversity. Human activities are currently contributing to high rates of species extinctions.
Step-by-step explanation:
Mass extinctions in biodiversity have been recognized in the field of Biology.
These events, characterized by a major decline in species diversity, have occurred five times throughout Earth's history.
They have had a significant impact on the development of biodiversity and have been caused by various environmental stresses.
The current high rates of species extinctions are a concern and are attributed to human activities such as habitat destruction, introduction of exotic species, and over-harvesting.