Answer:
Radiocarbon dating can be used to determine the age of a sample less than 50,000 years old - C
Answer:
B. Greenhouse gases are released into the atmosphere.
I learn it in my bio class
Answer:
Alan runs 1250 m/min in five minutes
Explanation:
250 x 5
Ka x Kb = Kw Kw = 1 x 10⁻¹⁴
(1.3 x 10⁻⁷) x Kb = 1 x 10⁻¹⁴
Kb = ( 1 x 10⁻¹⁴ ) / ( 1.3 x 10⁻⁷)
Kb = 7.7 x 10⁻⁸
Answer D
hope this helps!
