If enough ejecta (mainly ash) is sent into the upper atmosphere, the dust particles will block solar energy causing a decrease in temperature. This has happened in the past. Look for the year without summer caused by a volcanic eruption.
G=Green....because your starting plant is heterozygous it must be Gg
g = yellow ....because yellow is recessive, it must be gg
Gg x gg
Do a Punnet Square and you get
Gg (2)
gg (2)
So half of your plants will be green (but heterozygous) and half will be yellow (homozygous)
Answer: The ocean dissolves carbon dioxide from the atmosphere, and it is used by phytoplankton during photosynthesis.
Because people had as pets when they got to big they let them into the wild and they came a different place