Question

1. studies outer space, the solar system, and the objects in it
2. studies all forms of life
3. studies birds
4. studies butterflies and moths
5. studies classification
6. studies dinosaurs and fossils
7. studies earthquakes
8. studies elements, atoms, and molecules
9. studies water and the water cycle
10. studies parasites
11. studies fish
12. studies insects
13. studies fungi
14. studies mammals
15. studies volcanoes
16. studies viruses
17. studies plant life
18. studies processes that change and shape the earth
19. studies reptiles and amphibians
20. studies sound and its properties
21. studies the atmosphere and weather
22. studies the environment
23. studies the life - forms found in the ocean
24. studies the ocean
25. studies the remains of human life
26. studies rocks, minerals, and earth’s land forms
27. studies motion, forces, and energy to explain the way things work
28. studies the interaction between life forms in an environment
29. studies the interaction between life forms and the environment
30. a. astronomer

b. audiologist
c. biologist
d. biomedical engineer
e. botanist
f. cell biologist
g. chemist
h. ecologist
i. entomologist
j. environmentalist
k. geologist
l. geophysicist
m. hematologist
n. herpetologist
o. ichthyologist
p. hydrologist
q. lepidopterist
r. mammalogist
s. marine biologist
t. meteorologist
u. microbiologist
v. mineralogist
w. mycologist
x. oceanographer
y. ornithologist
z. paleontologist
aa. parasitologist
bb. physicist
cc. seismologist
dd. taxonomist
ee. virologist
ff. volcanologist
gg. zoologist

Explanation:

1. Studies outer - space, the solar system, and the objects in it: Astronomer (A). Astronomy focuses on celestial objects and space.
2. Studies all forms of life: Biologist (general term, not in list but related to life - study). In the list, Zoologist (HH) studies animals which is part of life - forms.
3. Studies birds: Ornithologist (Z).
4. Studies butterflies and moths: Lepidopterist (R).
5. Studies dinosaurs and fossils: Paleontologist (AA).
6. Studies earthquakes: Seismologist (DD).
7. Studies elements, atoms, and molecules: Chemist (H).
8. Studies water and the water cycle: Hydrologist (P).
9. Studies parasites: Parasitologist (BB).
10. Studies fish: Ichthyologist (Q).
11. Studies insects: Entomologist (J).
12. Studies fungi: Mycologist (X).
13. Studies mammals: Mammalogist (S).
14. Studies volcanoes: Volcanologist (GG).
15. Studies viruses: Virologist (V).
16. Studies plant life: Botanist (E).
17. Studies processes that change and shape the Earth: Geologist (K).
18. Studies reptiles and amphibians: Herpetologist (not in list but related; Zoologist also studies them in a broader sense).
19. Studies sound and its properties: Physicist (CC). Sound is a topic in physics.
20. Studies the atmosphere and weather: Meteorologist (U).
21. Studies the environment: Environmentalist (L).
22. Studies the life - forms found in the ocean: Marine biologist (T).
23. Studies the ocean: Oceanographer (Y).
24. Studies the remains of human life: Archaeologist (not in list but relevant).
25. Studies rocks, minerals, and earth’s land forms: Geologist (K).
26. Studies motion, forces, and energy to explain the way things work: Physicist (CC).
27. Studies the interaction between life - forms in an environment: Ecologist (I).

Answer:

1. A. Astronomer
2. HH. Zoologist
3. Z. Ornithologist
4. R. Lepidopterist
5. AA. Paleontologist
6. DD. Seismologist
7. H. Chemist
8. P. Hydrologist
9. BB. Parasitologist
10. Q. Ichthyologist
11. J. Entomologist
12. X. Mycologist
13. S. Mammalogist
14. GG. Volcanologist
15. V. Virologist
16. E. Botanist
17. K. Geologist
18. HH. Zoologist (broader sense)
19. CC. Physicist
20. U. Meteorologist
21. L. Environmentalist
22. T. Marine biologist
23. Y. Oceanographer
24. Archaeologist (not in list)
25. K. Geologist
26. CC. Physicist
27. I. Ecologist