Module 4 - Ecosystem Dynamics

potassium argon

potassium argon

There are several types of radiometric dating, including radiocarbon, ________, uranium- lead and cosmogenic isotope dating.

Wandjina paintings

The ________ are dated at 50, 000- 60, 000 years old via radiometric dating methods.

Fossils

________ are found in sedimentary rocks, as they typically form in water, as layers of sediment are deposited.

rock art

The Keep River ________ in the Northern Territory (NT) depicts four distinct changes in the types of animals, and most recently depicts the highest percentage of reptiles, implying an increase in wetlands.

Bradshaw paintings

The ________ are approximately 40, 000 years old, via relative dating methods.

Summer monsoon climate

________, drought is depicted when there is no monsoon.

fossil deposits

Changes in geological and ________ can be linked to evolutionary changes in ecosystems, for example, volcanic activity may be linked to environmental factors like atmospheric or temperature changes.

Radiometric dating

________ is an absolute dating method, which means it gives an actual age (in years) for an object (within a margin of error)

Fossils

________ provide information on past climates and ecosystems.

Inquiry Question

How do selection pressures within an ecosystem influence evolutionary change