Answer: Atoms were created after the Big Bang 13.7 billion years ago. As the hot, dense new universe cooled, conditions became suitable for quarks and electrons to form. Quarks came together to form protons and neutrons, and these particles combined into nuclei.
C. Australia was covered in ice during a key geologic period.
at the time of coal forming, Australia was closest to the south pole, so it was too cold.
For the second one it’s B or C, I dunno if phototropism is a real word cuz all the rest are vital.
Answer:
4. Microorganism
Explanation:
Wind, Salinity, Soil moisture are abiotic factors, non living things.
