What is a direct result of having green house gases in the atmosphere

A direct result of having greenhouse gases in the atmosphere would be energy from the sun trapping its self within the earth's atmosphere and ground, producing a lot of heat in the process since it cannot escape, making some temperatures rise substantially in some regions. However, another direct result would be plant growth. Greenhouse gasses are made of carbon dioxide, or CO2, and plants cannot live without carbon dioxide. It also causes a significant amount of water vapor which provides more rain as a direct result like it does carbon dioxide, which makes our planet healthier and able to survive easier.

Answer: abeexplanation:

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

Because it was a dramatically big guy