What planet's poisonous atmosphere has been described as the product of a " runaway greenhouse effect "?Why?

Question

a. earth

b. mars

c. venus

d. jupiter

Answer 1

Mars.

Answer 2

C

Answer 3

google says c

Answer 4

Its a couple hundred degrees warmer on the dark side of Venus than on the dark side of Mercury, which is half the distance to the sun that Venus is.   From satellite data we know the extreme heat isn't due to any internal heating of the planet.

Answer 5

CO2 is not poisons .. the plants use it up almost as fast as we make it. Mars has CO2 in the atmosphere , but Mars does not have plants to recycle the CO2 into O2..

Answer 6

I sincerely hope that I am not helping you with your homework, but the answer , if you think about it for a moment has got to be:

C: Venus

The 'Why ' in your question is why I felt that it deserved a proper answer.

By simple process of elimination, the other 3 do not fit the criteria.

Earth certainly does not have a poisonous atmosphere, otherwise we would not exist.

The other two are extremely cold planets, so there would be no "runaway greenhouse effect ".

Venus has been used as an example since the 1980's of how CO2 gas causes warming , since it has a 96% CO2 level in it's atmosphere, and it is an extremely hot planet.

While this is in fact true, the 'doomsayers' conveniently or intentionally ignore some very basic facts, such as the fact that Venus' rotation is a retrograde motion, and its day is equal to 243 earth days(from memory), and the atmospheric density is 90.5 times greater than earth's.

So they are not comparing 'apples to apples' when using Venus as any kind of valid example.

I could go into much more detail, but it could turn into a book, which you are not looking for, nor am I ready to bore you with.

Answer 7

Jim Z wrote

"It saddens me that our education system would label CO2 a poison but that is what you get when leftist run it."

Go, try to live on Venus. Even without the lead-melting temperatures, the amount of CO2, sulfur dioxide, sulfuric acid and lack of oxygen in the atmosphere can surely be considered poisonous by anything living on Earth.

----------

Edit:

Mike B wrote

"CO2 in high concentrations will suffocate you. Too much oxygen causes Pulmonary Oxygen Toxicity and will kill you. And of course, sulfur will kill you. So in reality, Oxygen is poisonous too."

I'm not sure where you are going with this. Too much of anything could be considered poisonous.

"All of the planets on the list have poisonous atmospheres. Earth is the only planet that supports life as we know it and the atmosphere is not breathe-able by humans or other animals."

The atmosphere includes the troposphere, where we live. Is the entire atmosphere habitable by life as we know it? No, but both the troposphere and stratosphere harbor life.

"So the answer is "E-all of the above"."

I am not sure why you would say this--Venus is the only planet that fits both criteria: 1) It has a poisonous atmosphere, and 2) It is the product of a runaway greenhouse effect.

Answer 8

C. - It's closer to the sun and has the same concentration of CO2 that our planet had about a billion years ago. The problem for Venus is that it's too close to the sun to support the kind of life that created the atmosphere we enjoy on earth.

The only thing I haven't figured out is how we discovered that Venus' atmosphere is mainly CO2. Were we able to send a probe out to the planet?

Answer 9

It saddens me that our education system would label CO2 a poison but that is what you get when leftist run it.  

Answer 10

With an atmosphere almost 100 times the pressure a co2 level of ~95% and closer to the Sun the answer can only be (C)

Answer 11

Bob326 wrote:

"Go, try to live on Venus. Even without the lead-melting temperatures, the amount of CO2, sulfur dioxide, sulfuric acid and lack of oxygen in the atmosphere can surely be considered poisonous by anything living on Earth."

CO2 in high concentrations will suffocate you.  Too much oxygen causes Pulmonary Oxygen Toxicity and will kill you.  And of course, sulfur will kill you.  So in reality, Oxygen is poisonous too.

All of the planets on the list have poisonous atmospheres.  Earth is the only planet that supports life as we know it and the atmosphere is not breathe-able by humans or other animals.  So the answer is "E-all of the above".

But we are "apparently" at a critical point where if we do nothing now the atmosphere will have a runaway greenhouse effect.  Mars' atmosphere is too thin to have any real greenhouse effect, we can't get passed the first layer of Jupiter's atmosphere to determine what is in there, Venus is theorized to once have had liquid water on it but boiled away (it is just a theory and basis for the so-called "runaway greenhouse effect"), and Earth is apparently at a point where it is about to have a runaway greenhouse.

I'm just humoring Dana, I mean, Drholdz.

Answer 12

d

please stop doing your homework on line; you are wasting any chance of a decent education and are simply increasing the chances that you will end up with a low-paying job and a miserable life:

Education is valuable!

P.S. To mikira - we've been sending probes to Venus for 40 years!!

(Plus you can tell the constituency of an atmosphere without going there - spectral analysis for a start)