Answer:
C and D
Ocean acidity was greater in 2010 than in 2000.
Heart disease is the major cause of death in the United States.
Explanation:
just took the question and those are the only two that are correct.
Answer:
The correct answer is option A, the type of isotope
Explanation:
The half life of a radioactive substance is a constant value and thus it is not affected by the temperature, catalyst or mass of the substance. Basically it is the time taken by a radioactive substance to reduce its mass by half of its actual value. Radioactive decay takes place only when the atomic nucleus becomes unstable and thus the isotope type is the only factor which affects the radioactive decay of any element.
Through the process of global warming
