The correct answer is (c.) unicellular eukaryotes. Unicellular eukaryotes apply to most protists. Protists are grouping of eukaryotic cells that do not form any natural group. These eukaryotes include the Golgi apparatus and mitochondria, and for plants they include chloroplasts.
Sedimentary rocks are formed by cementation and compaction
Organisms compete for the resources they need to survive- air, water, food, and space. In areas where these are sufficient, organisms live in comfortable co-existence, and in areas where resources are abundant, the ecosystem boasts high species richness.
The answer is true because walking does not affect the environment
