Final answer:
Delilah studies and manages natural resources to protect the environment. Her job title is best described as ecologist . Alicia studies water located underground, on the Earth’s surface, and in the atmosphere. Her job title is best described as hydrologist. Roscoe supervises and directs scientific workers and projects. His job title is best described as research supervisor or project manager. Jerry performs research to learn about human diseases and health. His job title is best described as medical researcher.
Step-by-step explanation:
- Delilah's job title is best described as an ecologist. Ecologists study and manage natural resources to protect the environment. They conduct research in natural environments, manage populations of plants and animals, and may also work as educators or in advisory positions to develop ecologically sound policies and legislation.
- Alicia's job title is best described as a hydrologist. Hydrologists study water located underground, on the Earth's surface, and in the atmosphere. They analyze water quality, study water flow and distribution patterns, and may work in areas such as water resource management or environmental consulting.
- Roscoe's job title is best described as a research supervisor or project manager. He supervises and directs scientific workers and projects. He ensures that research projects are progressing according to plan, manages budgets and resources, and may also be responsible for ensuring compliance with regulations and standards.
- Jerry's job title is best described as a medical researcher. Medical researchers perform research to learn about human diseases and health. They conduct experiments, analyze data, and may work in areas such as drug development, disease prevention, or public health.