Answer:
B. Oxygen
Explanation:
Trees release oxygen as a byproduct of photosynthesis, so once the trees are uprooted, they will no longer execute photosynthesis and thus no oxygen would be released by the dead trees.
Answer:
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Explanation:
Answer:
Their own food materials through photosynthesis by using sunlight, water and carbon dioxide. They also require other nutrients for growth and survival such as nitrogen (NOx) and phosphorus (POx).
Explanation:
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Answer:
Mast Cells
Explanation:
Mast cells release histamine in the blood stream, when they detect a substance that triggers an allergic reaction, also called an allergen.