Answer: Biogenic
Explanation: .....
Answer:
The correct otion is d.
Reason:
Primordial soup model was presented to explain the surface of earth in its prehistoric era.
for one it would be rising and for two dropping
Eyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
1. Temperatures are extreme; mostly high or very cold temps (only winter and summer it feels like). They have changed over years.
2. Polar ice caps (glaciers) are melting drastically.
3. Habitats/ecosystems such as the coral reef are suffering and are expected to disappear over the course of 10-20 years