Question

what is causing the 6th mass extinction to begin?
humans, climate change and habitat loss
meteors, dinosaurs and humans
roads, computers and erosion
railroads, gravity and birds
question 23
this the era came first in geological time scale.

• beginning of earth
• oldest rock formed
• one celled organisms like bacteria + jellyfish

true
false

Explanation:

The sixth mass extinction is primarily driven by human activities. Human - induced climate change disrupts ecosystems, and habitat loss (due to deforestation, urbanization, etc.) directly impacts species survival. Meteors were a cause in past extinctions (like the dinosaur - ending one), but not the current sixth. Options with roads, computers, erosion, railroads, gravity, and birds are not the main causes. The Precambrian is indeed the earliest era in the geological time scale.

Answer:

For the first question: Humans, climate change and habitat loss.
For the second question: True.