Answer:
<em>decreased variation in the shades of red over time because no form of the trait is advantageous</em>
Explanation:
Natural selection tends to favor those organisms which are better adapted to live in an environment. These organisms are able to survive and pass on their characteristics to their offsprings.
The red colour of the male cardinal's was selected by natural selection and hence this colour was abundant. If the females choose some other criteria for mating with males, then natural selection will no longer favor the red colour and hence there will be a decrease in the variations of red coloiur.
C. A nucleolus and Mitochondria
Don't smoke
stay away from x rays
no excessive exercise
B, because of the dry climates, they need to retain as much water as they possibly can.
Some electromagnetic waves have a long wavelength (radio and microwaves) but other have a smaller wavelength (xrays and gamma rays) and therefore it can penetrate your skin and cells and destroy/mutate then which can cause cancer.
