Answer:
Held Up
Explanation: If we take each option and place it in the blank of the sentence, we can see which one makes the most sense.
A. The train was <em>held back</em> by a heavy snowfall.
B. The train was <em>held out </em>by a heavy snowfall.
C. The train was <em>held off </em>by a heavy snowfall.
D. The train was <u>held up</u> by a heavy snowfall.
Answer:
Photosynthesis is an endothermic reaction because sunlight energy is absorbed during the process of photosynthesis by the plants. Photosynthesis is the process through which plants convert light energy into chemical energy. Here is the chemical reaction involved: As we can see, water and carbon dioxide combine to form glucose and oxygen. Since new chemical species are formed, photosynthesis is clearly a chemical change.
Explanation:
Answer:
They both require other writers to restate the information in their own words.
Explanation:
