Question

How might zircons help scientists study early Earth?

Zircons are the remains of billions and billions of cyanobacteria.
Zircons may add more radioactive isotopes to radiometric dating techniques.
Zircons show how the Earth's crust formed.
Zircons may hold evidence of early life and atmospheric composition.

Answer 1

The correct answer is "Zircons show how the Earth's crust formed".

Step-by-step explanation:

Zircons crystals are among the most resistant structures in the world. Some zircon crystals found in Australia helped scientists to study early Earth because they point to Earth's earliest crust cooling. Zircons show how the Earth's crust formed from a planet-wide lava ocean. Using dating methods, scientists determine that the zircons are about 4.4 billion years olds, which points that the Earth's crust has about the same age.

Answer 2

The Earth crust formation show by Zircon helps scientists to study early Earth.

Option C

Step-by-step explanation:

Zircon is a popular mineral which is formed of mainly zirconium sulphate crystals and are mainly blue in colour. Zirconium sulphate crystals are very old in nature, dating back to thousands of years. These minerals actually hold the chemicals that were formed back then.

This minerals can be studied to explain how were the landforms and chemical composition of earth crust back to thousands of years. Zircons can also hold some other radioactive elements which were radioactive back to thousands of years, but now they are normal.