The terms "life science" and "life sciences" have slightly different connotations:

1. Life Science:

• Singular Form: When used in the singular form, "life science" typically refers to a single, broad field of study that encompasses all disciplines related to the study of living organisms and life processes. It is a general term that can be used to describe the overall field as a whole.
  Example: "Life science" is essential for understanding the mechanisms of diseases and developing new treatments."

2. Life Sciences:

• Plural Form: The plural form, "life sciences," refers to the various specific disciplines within the broad field of life science. It highlights the diversity and range of distinct areas of study that fall under the umbrella of life science.
  Example: The "life sciences" include disciplines such as biology, botany, zoology, microbiology, genetics, and biochemistry."

"life science" is an upper noble term to speak about “science” that explains the "life", the general term for the overall field, while "life sciences" emphasizes the different specialized areas within that field.