The answer is A. Uracil is found in RNA only. Thymine is found in DNA only
This question had choices:
A. nitrogen
B. hydrogen
C. water
D. ozone
<span>Miller and urey model is inconsistent with the finding that earth's early atmosphere lacked D. OZONE.
The Miller and Urey experiment used </span> water<span> (H</span>2<span>O), </span>methane<span> (CH</span>4<span>), </span>ammonia<span> (NH</span>3<span>), and </span>hydrogen<span> (H</span>2<span>).
Given the choices, ozone is not part of the experiment. Ozone is a chemical compound with formula O3. </span>
The Heart is located in the Thoracic Cavity medial to the lungs and posterior to the sternum.
Answer:
C: Lowering activation energy
Explanation:
A catalyst speeds up a chemical reaction, without being consumed by the reaction. It increases the reaction rate by lowering the activation energy for a reaction.