How do I tell which curve is the top/bot or right/left? I keep getting confused about this.
Is it just the right/top most intersection and the bot/left most one?
no idea -- which curves?
I'm talking about in a general sense. Let's say it's y = x^2 and y = 2x- x^2.
Will it always be the upper bound curve that is the top one?
Bot
bot hi
In general, the top and bottom or left and right curves depend on the specific coordinates and context of the problem. However, in the case of the equations y = x^2 and y = 2x - x^2, the curve that is the top or bottom depends on the specific interval being considered. For example, on the interval [-1, 1], the curve y = x^2 is the bottom curve, while on the interval [1, 2], the curve y = 2x - x^2 is the bottom curve. In general, you can find the top and bottom curves by graphing them or by evaluating them at certain points to see which one is higher or lower.
What are greenhouse gases?
*
a. gases that are only present in the atmosphere due to human activity
b. gases occurring in buildings where plants are grown
c. gases that act likes insulators for the planet
d. gases that do not occur naturally on Earth
c. gases that act like insulators for the planet.
2. How could extra carbon dioxide be responsible for increasing temperatures on Earth?
*
a. extra carbon dioxide is leading to more heat being trapped in Earth’s atmosphere
b. carbon dioxide is flammable
c. extra carbon dioxide leads to extra methane in the atmosphere
d. carbon dioxide produces heat
a. Extra carbon dioxide is leading to more heat being trapped in Earth's atmosphere.
3. What time frame does this graph include?
*
a. about 400,000 years ago to the present
b. from the present day to 400,000 years in the future
c. one million years ago to the present day
d. the graph does not provide a timeframe
a. The graph includes about 400,000 years ago to the present.
4. Describe what happened to the overall level of carbon dioxide over this period of time.
*
a. carbon dioxide levels only increased
b. carbon dioxide level only decreased
c. carbon dioxide levels increased and decreased several times
c. Carbon dioxide levels increased and decreased several times.
5. About what is the highest level of parts per million of carbon dioxide (ppm) in the air in the 400,000 years before modern time? (In other words, what level of carbon dioxide was never exceeded?)
*
a. carbon dioxide levels never went over about 250ppm
b. carbon dioxide levels never went over about 275ppm
c. carbon dioxide levels never went over about 300ppm
c. Carbon dioxide levels never went over about 300ppm.
11. Which of the following describe what happened to Earth’s temperatures during this time period.
*
a. temperatures only increased
b. temperatures only decreased
c. temperatures increased and decreased several times
c. Temperatures increased and decreased several times.
. About how many millimeter did the sea level rise from 1900 to 2000?
*
a. It did not rise.
b. About 200mm
c. About 230mm
d. About 2010mm
c. About 230mm
22. Describe the overall trend of the sea level.
*
a. Overall, the trend is an increase in sea level.
b. Overall, the trend is a decrease in sea level.
c. In general, the sea level remains very steady.
d. In general, the sea level goes up and then down dramatically.
a. Overall, the trend is an increase in sea level.
. What is the overall trend of the amount of ice in Greenland’s ice sheets?
*
a. Overall, the trend is an increase in ice.
b. Overall, the trend is an increase in ice loss.
c. Overall, the trend is that ice levels have been steady.
d. Overall, the trend is that ice levels go up and down frequently.
b. Overall, the trend is an increase in ice loss.
16. Compare the years 1960 to 2010 on Graph 4 and Graph 2. Click all responses that apply:
*
a. Graph 4 shows a trend of increasing temperature anomaly.
b. Graph 2 shows an increase in carbon dioxide levels.
c. Graph 2 and Graph 4 show no correlation between carbon dioxide levels and atmospheric temperatures.
d. Graph 2 and Graph 4 could be used to show a correlation between carbon dioxide levels and atmospheric temperatures.
a. Graph 4 shows a trend of increasing temperature anomaly.
b. Graph 2 shows an increase in carbon dioxide levels.
d. Graph 2 and Graph 4 could be used to show a correlation between carbon dioxide levels and atmospheric temperatures.