Answer:
A) Reaction X used a catalyst
Explanation:
Reaction X has a lower activation energy and the most likely cause of this would be a catalyst.
Answer : Determine the skater's average velocity from t=0s to t= 12s. Velocity = displacement Xp-X, 1 time met 0-0 12 secs
To pump blood through out our body and to keep us alive
Answer:
13000 would be avalable because 10% is taken every time it is eaten so 65,000 with 10% taken out twice (20% of 65,000) is only 13,000 kcal available to the secondary consumers.