It depends on your definition of “ancient.” Radiometric dating using Carbon-14 can reliably date back to about 50,000 years, uranium-lead or lead-lead dating can date back multiple millions, potassium-argon dating can reach 1.5 billion, and rubidium-strontium can reach 50 billion (nearly 4x the age of the universe). It depends on the context in which this question is being asked.
Answer:
the force of the plow pulling backward on the tractor
Explanation:
Delis cactus is the correct way to write it.
Answer:
intensity because square of the amplitude is proportional to the intensity of the wave
Explanation:
