These sentences are very natural. The only correction is that "phyla" is the plural form ("phylum" is the singular; being a Latin word it has different rules from English).

Are these eleven sentences correct and natural?

1. Biologists classify life forms into many phylas.
2. Her love for the child was deep.
3. The boating accident was caused by the dense fog.
4. The children's work was (displayed / exhibited)on the wall.
5. Until recently Italy's exports exceeded its imports.
6. Reaching the Moon was a gigantic step for mankind in exploration of space.
7. The way he handled the situation was most impressive.
8. His vibrant personality made him well liked by everyone.
9. His mother was the dominant influence in his life.
10. This volcano had been dormant for hundreds of years before the eruption last month.
11. Handling flammable liquid is hazardous.