Characteristics [edit]. Bantams are suitable for smaller backyards as they do not need as much space as other breeds. Bantam hens are also used as laying hens, with some breeds laying up to 150 eggs per year. However, Bantam eggs are only about one-half to one-third the size of a regular hen egg.antams are suitable for smaller backyards as they do not need as much space as other breeds. Bantam hens are also used as laying hens, with some breeds laying up to 150 eggs per year.
All in all, the sunspots appear dark because the are darker than the surrounding surface. They're darker because they are cooler, and they're cooler because of the intense magnetic fields in them. share | improve this answer.
Sunspots are magnetic in nature. They are the places (active regions) where the Sun's magnetic field rises up from below the Sun's surface and those magnetic regions poke through. Sunspots are darker than the surrounding areas because they are expending less energy and have a lower temperature. Sunspots often have poles (polarity) like the south and north poles of magnets. Sunspots are formed continuously as the Sun's magnetic field actively moves through the Sun. The sunspots have lifetimes of days or perhaps one week or a few weeks. Here is one scenario that some scientists think explains how sunspots form.