Why Is the Strategy of Searches for Extraterrestrial Life Usually

question 28

Multiple Choice

Why is the strategy of searches for extraterrestrial life usually based on carbon chemistry?

• A) Carbon dioxide is the main ingredient of planetary atmospheres, both terrestrial and Jovian.
• B) No other atom can combine easily with the abundant hydrogen and helium to form long molecules in interstellar gas.
• C) Most meteorites that reach Earth are composed of carbon.
• D) Carbon is abundant and is versatile in forming complex, long-chain molecules.

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Definitions:

Cause-and-Effect Models

Analytical tools used to identify and understand the relationships between cause (independent variables) and effect (dependent variables).

HR Planning

The ongoing process of systematic forecasting both the future demand for and supply of employees to ensure the organization has the right number of workers with the necessary skills.

Independent Variables

Variables that are manipulated or changed in an experiment to test their effect on the dependent variables.

Operational Time Periods

The specific intervals or durations during which business operations are executed, ranging from short-term daily operations to long-term strategic planning periods.