A person that studies rocks minerals and earth's land forms are geologist
The answer is the first one: “...attract each other.”
Answer:
The kingdom Animalia, or Metazoa, includes all animals. Animals are multicellular, eukaryotic organisms, which are heterotrophic, meaning they obtain nutrition from organic sources.
Explanation:
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Last option: Preserve an ecosystem

• The establishment of a bird reservation is a way to preserve an ecosystem because reservation provides suitable environment to organism. A healthy ecosystem means large number of biodiversity.
Answer:
Diagnosistic use
Explanation:
When a person goes to the hospital displaying signs and symptoms of a disease. The doctor will have to make a diagnosis.
Diagnosis is made to determine or explain which disease or condition is causing the symptoms.
Drugs that are used during radiological procedures and other medical tests will be used of Diagnostic purpose to show evidence of a disease.
From the results of the Diagnostic tests a conclusion came be made.
Therefore, they were for Diagnosistic use.