They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases.
There are guard cells surrounding each stoma that cause them to open or close throughout the life cycle of the plant. This occurs in response to water and ions concentration in the plant cell.
Lady bugs are carnivores. If you want to get more technical they are insectivores. This is because they only eat soft bodied insects/arachnids like aphids, mites, and scale insects.
