Enzymes are proteins that speed up chemical reactions without being used up.
Answer:
Its D. role of carbon dioxide in photosynthesis.
Explanation:
I know its right bc I just got that question.
The speed of the cross country runner is equal to 4 km/min.
<u>Given the following data:</u>
To determine the speed of the cross country runner:
Speed can be defined as the distance covered by an individual per unit time and it can be measured in kilometer per minutes (km/min).
Mathematically, speed is given by the formula;

Substituting the given parameters into the formula, we have;

Speed = 4 km/min.
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<span>c. co2 and h2o are converted to carbohydrates
Hope this helps!</span>
An example of force that acts at distance is gravity and an example of contact force is pushing a chair across the room