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• An agronomist specialises in soil and crops.

• An astronomer studies stars, planets and galaxies.

• A botanist specialises in plants.

• A cytologist specialises in the study of cells.

• An epidemiologist studies the spread of diseases.

• An ethologist studies animal behavior.

• A geneticist studies how traits are inherited.

• A geologist specialises in the history of Earth.

• A geographer studies Earth’s surface.

• A marine biologist studies ocean plants and animals.

• A meteorologist studies weather and climate.

• A microbiologist studies microscopic plants and animals.

• A paleontologist specialises in fossils.

• A physicist studies matter, energy, and how they are related.

• A seismologist studies earthquakes and tsunamis.

• A volcanologist is a geologist who studies the eruptive activity and formation of volcanoes, and their current and historic eruptions.