A is the right answer because it is.
Okay so northern Africa and the Sahara desert is the best example of desertification.
2 ways humans have contributed to that is: 1) pastoral nomadism 2) little to no settlements to increase water supply
how it impacted the environment: so now the environment there is sandy, only organisms adapted for those extreme environment can live there ex. camel, cactus, etc.,
how it impacted quality of life: quality of life diminished, not enough water to sufficiently feed the populations, people live in extreme poverty, people are moving away, and the climate is very dry and hot, pretty much not a place anyone would want to live
http://eden-foundation.org/project/desertif.html
https://www.sciencedaily.com/releases/2017/03/170314111320.htm
A compound is organic if it contains carbon covalently bonded to other atoms. Most often, the other atoms include hydrogen, oxygen, and/or nitrogen. A few carbon compounds, such as simple oxides (e.g. CO2) and cyanides (e.g. KCN) are excluded arbitrarily.
The inner layer, the dermis, consists of a superficial papillary region of loose, areolar connective tissue, connective tissue and a thicker and deeper reticular region of dense irregular connective tissue connective tissue.
<h3>The layers of the skin</h3>
The skin is the largest peripheral organ that covers the outer layers of the body. It is made up of two layers namely:
- Epidermis: The epidermis is the outer layer and it is made up of stratified squamous epithelium.
- Dermis: The dermis is the inner layer of skin. it is made up of superficial and deep layers.
The superficial layer is made up of papillary region of loose areolar connective tissue which helps to attach epithelial tissue to other underlying tissues.
While the deep layer is made up of dense irregular connective tissue which provides strength, making the skin resistant to tearing by stretching forces from different directions.
Learn more about the skin here:
brainly.com/question/306377
