Answer:
Producers give off AND take in carbon dioxide
Explanation:
They give off carbon dioxide from respiration so they return carbon dioxide to the atmosphere. They also use carbon dioxide to synthesize their food.
Answer:
examples include, "FF" or "DD", or just two uppercase letters.
Explanation:
Answer:Almost 2/3 of our body store of iron is found in the hemoglobin in our blood
Explanation:
