Bacterial growth curve experiment with bacterial growth Can someone help me with this garbage

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

Classify the structures as homologous or analogous, depending on their structure and function.

According to the cladogram, which organisms have roundworms as a common ancestor?