Variables. An experiment generally tests how one variable is affected by another. The affected variable is called the dependent variable.
The correct answer would be A.secondary succession. I hope this helps.
The greeks believed the Earth was stationary at the center of the universe while objects in the sky revolved around it. The Greek astronomers employed the term Asteres planetai meaning “wondering stars” for star like objects. By the 19th century the word planet thought it hadn’t been defined was the working term applied
Answer: A-T, G-C
Explanation: A and T/ C and G will always go together in DNA
