Answer:
Feathers perform a number of functions for a bird:
1) They provide insulation, body temperature of most birds is maintained at around 40 C.
2) Feathers allow for flight.
3) Feathers control what a bird looks like by supplying the bird with colors.
Explanation:
Feathers insulate birds from water and cold temperatures. They may also be plucked to line the nest and provide insulation to the eggs and young. The individual feathers in the wings and tail play important roles in controlling flight. Some species have a crest of feathers on their heads.
I would choose Option 2
about 50% chance that the dominance is in, but when it is, its dominant, of course.
no other Option can give you a 50% chance
in 1 its always there, in 3 as well, in 4 never
<span>The first organic compound is Carbohydrates. Most organisms
use is as a primary fuel or their main energy source. They make up cell
structures, and they're also used as stored energy in plants. Second is Lipids.
If we have any other energy left over in our bodies, we typically will store
that as lipids, which a lot of people think of as fats. It also makes up the
cell membrane, and coats the leaves of plants to make them waterproof and also
protect them from the elements. Third type are proteins. One use of proteins
are chemical messengers or hormones. Proteins are useful for receptors and
transport channels in order to help things move in and out of the cell. They
also help to control and regulate chemical reactions. Another use is for cell
structures, like your hair. the last one is for immunity. The fourth and last
is Nucleic Acids. There are two main uses in organisms for nucleic acids. The
first one is for protein synthesis. The other use is for our hereditary
information or how we pass our traits to our offspring.</span>
The crust is the outermost “skin” of Earth and variable thick- nesses; it is thickest under mountain ranges (70 km) and thinnest under the mid- ocean ridges (3 km).
