The dermis is the inner layer of skin. The dermis has blood vessels and nerve endings. The nerve endings explain why your skin is sensitive. You can sense pain, pressure, and temperature. You cut your finger and it starts to bleed. What has happened? If your skin bleeds, it means you have cut the dermis layer and damaged blood vessels. The cut really hurts. It hurts because of the nerve endings in this skin layer. The dermis also contains hair follicles and two types of glands. Hair follicles are structures where hairs originate. Each hair grows out of a follicle. Hair passes up through the epidermis. It then extends above the skin surface. Oil glands produce an oily substance. The oil is secreted into hair follicles.

Why do I bleed when I cut myself?

Literary career During the war Camus joined the French Resistance cell Combat, which published an underground newspaper of the same name. This group worked against the Nazis, and in it Camus assumed the nom de guerre Beauchard. Camus became the paper's editor in 1943. He first met Sartre at the dress rehearsal of Sartre's play, The Flies, in June 1943. When the Ailies liberated Paris in August 1944, Camus witnessed and reported the last of the fighting. Soon after the event on 6 August 1945, he was one of the few French editors to publicly express opposition and disgust to the United States' dropping the atomic bomb in Hiroshima. He resigned from Combat in 1947 when it became a commercial paper. After the war, Camus began frequenting the Cafe de Flore on the Boulevard Saint-Germain in Paris with Sartre and others. He also toured the United States to lecture about French thought. Although he leaned left, politically, his strong criticisms of Communist doctrine did not win him any friends in the Communist parties and eventually alienated Sartre. In 1949, his tuberculosis returned, whereupon he lived in seclusion for two years. In 1951, he published The Rebel, a philosophical analysis of rebellion and revolution which expressed his rejection of communism. Upsetting many of his colleagues and contemporaries in France, the book brought about the final split with Sartre. The dour reception depressed Camus; he began to translate plays. Camus's first significant contribution to philosophy was his idea of the absurd. He saw it as the result of our desire for clarity and meaning within a world and condition that offers neither, which he expressed in The Myth of Sisyphus and incorporated into many of his other works, such as The Stranger and The Plague. Despite his split from his "study partner", Sartre, Camus was still categorized as an Existentialist. He specifically rejected that label in his essay "Enigma" and elsewhere.

What label assigned to him did Camus reject?

Living things need non-living matter as well as energy. What do you think matter is used for? One thing is to build bodies. They also need it to carry out the processes of life. Any non-living matter that living things need is called a nutrient. Carbon and nitrogen are examples of nutrients. Unlike energy, matter is recycled in ecosystems. You can see how in Figure 3.11. Decomposers release nutrients when they break down dead organisms. The nutrients are taken up by plants through their roots. The nutrients pass to primary consumers when they eat the plants. The nutrients pass to higher level consumers when they eat lower level consumers. When living things die, the cycle repeats.
Are carbon and nitrogen considered living or non-living?