Why is carbon monoxide sometimes called the silent killer?
What will be the ideal response?
ANSWER: Because carbon monoxide cannot be seen or smelled, it can kill without warning. Here’s how: Normally, your cells obtain oxygen through a blood pigment called hemoglobin, which picks up oxygen from the lungs, combines with it, and carries it throughout your body. Unfortunately, human hemoglobin prefers carbon monoxide to oxygen, so if there is too much carbon monoxide in the air you breathe, your brain will soon be starved of oxygen, and headache, fatigue, drowsiness, and even death may result.
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Most fish need a minimum of ________ parts per million of dissolved oxygen in seawater to survive for long periods
A) 0.4 B) 4 C) 40 D) 400 E) 4,000
There are often eight issues that can be debated when reflecting on environmental policy. They include:
1. government versus individual 2. competing public values 3. uncertainty and action 4. which level of government decides? 5. which government agency has jurisdiction? 6. protection against selfish actions 7. the best means to an end 8. political power relationships Discuss at least two of the above issues, describing the challenges that each brings to developing environmental policy. What will be an ideal response?
If you were visiting Germany in 1800, what would you do to convince a geology student that not all rocks formed by precipitating from water?
What will be an ideal response?
Water vapor can best be described as a
a. ?gas. b. ?cloud droplet. c. ?rain drop. d. ?snowflake. e. ?liquid.