The Sahara Desert has very harsh environmental conditions for life. Temperatures range from 20 to 45 degrees Celsius, and the ground can become blazing hot from the sun's direct rays. Most animal life is small, nocturnal carnivores or insects. Humans have adapted to the desert by developing dark skin to shield from the sun and tall bodies to minimize water needs. They maintain stable temperatures through sweating but must replace lost fluids to avoid dehydration, which can impact bodily systems. Loose, light clothing and head coverings help humans cope with the desert heat.

1. Fatima Lakhani Sahara Desert