Answer:
Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But humans have burned so much fuel that there is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place.
Answer:
scientists use the scientific process to ask and answer questions as thoroughly as possible. Biologists use the scientific process to ask and answer questions about the living world. ... If evidence for a question cannot be gathered, that question cannot be answered
Explanation:
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<span>True. Pure water is pH 7 (neutral).</span>
A cell uses the cytoskeleton to guide or group organelles
my guess is B. I am probably wrong