Answer the following question given this paragraph:   5.2 Accessory Structures of the Skin Accessory structures of the skin include hair, nails, sweat glands, and sebaceous glands. Hair is made of dead keratinized cells, and gets its color from melanin pigments. Nails, also made of dead keratinized cells, protect the extremities of our.   Q: What does hair get its color from?   A:
melanin pigments
--
Answer the following question given this paragraph:   Gingkophytes The single surviving species of the gingkophytes group is the Gingko biloba (Figure 26.11). Its fan-shaped leaves—unique among seed plants because they feature a dichotomous venation pattern—turn yellow in autumn and fall from the tree. For centuries, G. biloba was cultivated by Chinese Buddhist monks in monasteries, which ensured its preservation. It is planted in public spaces because it is unusually resistant to pollution. Male and female organs are produced on separate plants. Typically, gardeners plant only male trees because the seeds produced by the female plant have an off-putting smell of rancid butter.   Q: Why is gingko biloba planted in public spaces?   A:
resistant to pollution
--
Answer the following question given this paragraph:   Native elements contain only atoms of one type of element. They are not combined with other elements. There are very few examples of these types of minerals. Some native elements are rare and valuable. Gold, silver, sulfur, and diamond are examples.   Q: What do you call elements that contain only atoms of one type of element?   A:
native elements
--
Answer the following question given this paragraph:   Gas exchange is needed to provide cells with the oxygen they need for cellular respiration. Cells cannot survive for long without oxygen. Gas exchange is also needed to carry away carbon dioxide waste. Some of the carbon dioxide in the blood dissolves to form carbonic acid, which keeps blood pH within a normal range.   Q: What is needed to provide cells with the oxygen they need for cellular respiration?   A:
