Scientists Have Studied Atmospheric Conditions Over the Last Century and Have

question 22

Multiple Choice

Scientists have studied atmospheric conditions over the last century and have noted that the atmospheric carbon dioxide level has __________ and global temperatures have __________.

• A) decreased; decreased
• B) decreased; increased
• C) increased; decreased
• D) increased; increased

Identify and differentiate between isotopes, particularly those relevant to nuclear energy and weaponry.

Describe the concept of critical mass and its significance in nuclear reactions.

Recognize the role of isotopes in dating techniques and medical applications.

Clarify the nature and properties of various types of radiation, including alpha, beta, and gamma rays.