Science Review Chapter 2

Study Notes

Lesson 2 - Science Review

Cyanobacteria: Single-celled organisms that use photosynthesis to create food. They produced an oxygen-rich atmosphere on ancient Earth.
Oxygen-Rich Atmosphere: Early Earth's atmosphere was transformed by cyanobacteria, producing an oxygen-rich environment.
Igneous Rock Layers: Dating methods like radiometric dating can be applied to determine the age of igneous rock layers, providing information tied to ancient life.
Cambrian Explosion: A period of significant diversification of life forms, characterized by the sudden appearance of many new species.
Transitional Fossils: Fossils that exhibit traits of both ancestral and descendant species, showing evolutionary changes.
Evolutionary Adaptations: Organisms adapt to their surroundings, including adapting to and responses to predators.
Predators and Prey: Predators are organisms that hunt and kill other organisms for food, while prey are the organisms that are hunted. The evolution of predators can lead to new adaptations and diversity in the prey population.
Fossil Evidence: Fossils reveal changes and characteristics over time. Transitional fossils show evolutionary links.
Body Structures: Fossils reveal body structures in ancestral species and traits.
Amphibians, Reptiles, and Mammals: Common features, like bones in their fins, can be seen in transitional fossils like Tiktaalik, showing evolutionary paths.
Later Rock Layers: Later rock layers frequently include various fossils, including those of amphibians, reptiles, ancient birds and mammals, revealing life's progression over time.

Description

This quiz covers key topics from Lesson 2 in Science, focusing on cyanobacteria, the transformation of Earth's atmosphere, and significant events in evolutionary biology such as the Cambrian Explosion. Explore concepts like transitional fossils and the dynamics of predators and prey. Test your understanding of how these elements contribute to the history of life on Earth.