Answer:
Greenhouse gases are good because they keep the Earth warm. They trap the heat energy that is radiated from the Earth in the atmosphere. Without greenhouse gases, the Earth would have an average yearly temperature of 0 degrees Celsius.
Can you be a little more specific?
The abiotic and biotic factors of an ecosystem both interact with each other on many levels. For example, temperature, which is an abiotic factor in most ecosystems, will determine what type of flora and fauna can live there.
