<p>The correct answer is greenhouse gases.</p>
<p>@jzs583 Although CFCs contribute to the depletion of the ozone layer, greenhouse gases contribute more than any other answer choice. As a result, the answer was greenhouse gases.
I studied with Barron’s and they have some quotes that clearly link global warming with greenhouse gases:
“Excessive burning of fossil fuels has caused the concentrations of carbon dioxide in the air to increase to such high levels that it causes the greenhouse effect. This means that carbon dioxide and water vapor in the air absorb much of the infrared radiation reflecting off of Earth, causing the average temperature on Earth to rise. This increase in temperature is called global warming and could have disastrous effects for Earth” (294).
Whereas for CFCs, it only says:
“The accumulations in the air of chlorofluorocarbons, chemicals used for refrigerants and aerosol cans, have caused the formation of a hole in the protective ozone layer. This allows more ultraviolet (UV) light to reach Earth, which in turn is responsible for an increase in the incidence of skin cancer worldwide” (294).
I agree that the question was annoying though :P</p>
<p>Whoops, meant @jzs584, not 583.</p>
<p>One more question, what did everyone put for the question about the plant in the green light? I said it was the low amount of oxygen bacteria or something like that. It wasnt chlorophyll or was it.</p>
<p>Does anyone know the correct answer for the question about the correct order of evolution? Was it the option without the dinosaur?</p>
<p>The correct answer for the question about the plant was the one with the oxygen seeking bacteria. It was not chlorophyll.</p>
<p>if you know that the order was starfish, shark, dino, bird, and then whale i dont think it’ll matter.</p>
<p>@jzs584 It was the lack of oxygen-seeking bacteria, because oxygen is a byproduct of photosynthesis. A plant in the green part of the spectrum would not be able to photosynthesis.</p>
<p>@jkr485 I believe it was starfish, shark, dinosaur, bird.</p>
<p>LOL did anyone take Biology E? I am trying to remember the answers to those 4 net productiviry questions… Does anyone remember???</p>
<p>One of the answers was the alfalfa field. Another was the two columns that were farthest right. One of the others was net community production or something. And I don’t remember the others.</p>
<p>@Astroblue do you remember if there were two questions referring to net community production or something that listed numbers like 9200, 10000, etc?</p>
<p>I am well aware that greenhouse gases cause global warming, but the question was, “which of the following statements about global warming are true” and the statement regarding greenhouse gases was
It results in greenhouse gases in the atmosphere</p>
<p>Clearly, the cause and effect are in the wrong place
Greenhouse gases result in global warming NOT
Global warming results in greenhouse gases</p>
<p>^ It said “results from,” not “results in.” I read over it carefully to make sure.</p>
<p>Also, CFCs do not cause global warming, so there wasn’t any other reasonable choice.</p>
<p>[Chlorofluorocarbon</a> - Wikipedia, the free encyclopedia](<a href=“Chlorofluorocarbon - Wikipedia”>Chlorofluorocarbon - Wikipedia)
"As previously discussed, CFCs were phased out via the Montreal Protocol due to their part in ozone depletion. However, the atmospheric impacts of CFCs are not limited to its role as an active ozone reducer. This anthropogenic compound is also a greenhouse gas, with a much higher potential to enhance the greenhouse effect than CO2.</p>
<p>Infrared bands trap heat from escaping earth’s atmosphere. In the case of CFCs, the strongest of these bands are located at the spectral region – referred to as an atmospheric window due to the relative transparency of the atmosphere within this region.[19] The strength of CFC bands and the unique susceptibility of the atmosphere, at which the compound absorbs and emits radiation, are two factors that contribute to CFCs’ “super” greenhouse effect.[20] Another such factor is the low concentration of the compound. Because CO2 is close to saturation with high concentrations, it takes more of the substance to enhance the greenhouse effect. Conversely, the low concentration of CFCs allow their effects to increase linearly with mass." </p>
<p>Just saying</p>
<p>I remember sitting at the question thinking about the mistake between the cause and effect.</p>
<p>If you look at JZS584’s quote, you can see that CFCs are “super greenhouse gases”, I would fathom that that indicates that they cause global warming even more than your average greenhouse gas…</p>
<p>Just generally biologically speaking,
when I was working, I thought about my muscles, and I
thought that when ATP was hydrolyzed causes the muscles to contract
right? If you add ATP to muscles, it will relax but not contract? I’m pretty
sure my bio teacher told me that</p>
<p>and also when I did a worksheet about chromosomes,
if nondysjunction occurs, is it like ^^ or <-_> on both ends?</p>
<p>I haven’t checked the validity of that link, but I do know a few things. CFCs result in a reduction of O3 in the atmosphere. The whole point of greenhouse gases is that they increase heat-trapping gases in the atmosphere, not decrease them. Furthermore, the link provided seems to be talking about potential. This question was referencing global warming that has already occurred, not global warming that could potentially happen in the future. CFC use has been reduced significantly in all industrialized countries, while the production of greenhouse gases like CO2 has only increased. All of these reasons point to the answer being an “increase in greenhouse gases.” I am almost certain it said “results from.”</p>
<p>Tenisgirl, it was very steep for vines. Also, plants had a higher O2 production during the daytime b/c more light stimulates a higher rate of photosynthesis, which would release more O2. </p>
<p>thingschange, yeah it was gastrulation. It asked for when the layers separate and different types of organs begin to speciate. </p>
<p>Lanayru, wait are you sure for number 5 for the compiled list, it asked what it was AFTER resp? >< did it say resp of producers or of producers and consumers combined?
I’m pretty sure there were 5 answers for that one.</p>
<p>In the AP Bio book, on pgs. 1239-1240, greenhouse gases are consistently mentioned together with global warming. “Rising concentrations of long-lived greenhouse gases such as CO2 are changing Earth’s heat budget… the marked increase in the concentration of atmospheric CO2 over the last 150 yrs concerns scientists b/c of its link to increased global temp.” The book also states that chlorofluorocarbons destroy the ozone layer, that’s correct, but it then only talks about skin cancer and cataracts and UV light. That’s the only time chlorofluorocarbons is mentioned in the entire book, and global warming / greenhouse gases aren’t mentioned there at all.</p>
<p>@Aquawater Do you remember if there was a number-liek question with answer choices that were numbers for that biome net production set of questions?</p>
<p>Blacksnow, I’m not sure about muscles. Um… that sounds like it was from the M section? Or were you just curious? </p>
<p>Nondisjunction would look like <___></p>