Which describes the greenhouse effect?

I don't understand your question but here's an answer

Explanation:

The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.

Natural process.

Explanation:

Greenhouse effect is a natural process that arms up earth’s atmosphere. Sun radiations when hit the ground are absorbed and some reflected back to the atmosphere and absorb by the greenhouse gases. These rays maintain the temperature of earth’s surface and keep it warm.

But due to excessive human activities, greenhouse effect is high and making the earth hotter.  

i have to report this, it doesn't relate to biology

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.