Birds, warm-blooded creatures with wings, first appeared at least 150 million years ago. They are covered in feathers and lay eggs in nests. While most birds are capable of flight, some species throughout history have been flightless. In other scientific terms, a colloid is a mixture where tiny particles are dispersed throughout another substance, like fog or milk. Crystals are solids with a structured, three-dimensional arrangement of atoms, often forming minerals. Data refers to collected facts or statistics, while evolution describes the process of species changing over time to better adapt to their environments. Guanine is a crucial component of DNA. Materials scientists study the properties of materials to design new ones or improve existing ones. Microscopes allow us to see tiny objects, and molecules are the smallest units of chemical compounds. Nudibranchs are colorful sea slugs without shells or true gills.
QUESTION: How might understanding the evolution of birds influence our approach to conserving endangered species today?
Analyze This: How sea slugs get their flashy colors
