Peppered moths started out as white moths with black spots, making it resemble pepper. Over time, they turned black with white spots. Why did this happen?
     The air in England near the forests where the moths lived was polluted. Pollution is pretty much dirty air, so the dirty air colored the wings of the moth, causing it to turn dark. If a black moth is on a light colored tree, the chances of survival are low, but if it is on a dark tree, they have a greater chance of survival, and vise versa. 
     In the future, I predict that the wings of the moth may start to yellow a bit. I think this because there maybe a higher pollen count, and pollen is a yellowish color. Just like the pollution darkened the wings of the moth, pollen may lighten the color of the wings of a light moth, so it will turn yellow. 
     

     Let's say that there is a snake in a grassland. This snake eats mice, but since there is a shortage, how will the snake adapt?
     The snake can adapt to eating things other than mice. Maybe a gopher or another small creature in the rodent family. If there is a shortage in it for all the snakes throughout the grassland, the rodent population will decrease. The snakes may have to move if this happens.
     What if there is a shortage of deer? What will the large cats (loins, tigers, cheetahs, etc.) eat? They will be forced to eat something else. They do eat zebras, but maybe they prefer deer. Oh well, they have to eat other things. As a chain reaction, if there isn't enough food for the large cats, there won't be any carcasses for the carnivorous birds. The entire food chain will suffer. The chain would be something like this:
Plants > Deer > Lion > Vulture. 
     Of course there are others included. The animals, whether it be in grasslands, forests, rain-forests, will at one point go through a shortage. They must adapt to the changes in food availability. Sometimes there won't be any way to adapt, so they'll have to move. The place they move to has to be considered. For example, a toucan can't move to a desert. A toucan will still need to be in a forest will some access to water. There is always a possibility this will happen.
     Some animals even evolved over time. A bird may have a long beak to reach bugs, then there's a shortage, than they adapt by evolving beak type to something else, like the kind a parrot has for cracking nuts. 

     A few weeks ago in science class, we made a paper pet family to show the crosses of genetics from both parents. We flipped coins to show what parent had what traits. We did the same for all six babies. All babies turned out blue, even when the dad was yellow. He must have been the recessive parent. The yellow gene was lost. 
     It helped to show how my genetics I inherited from my parents. I have my dad's light hair and eyes, but I have my mom's facial shape and thick hair. We both fave free ear lobes (kind of random, but it's true, that is, in fact, a gene). I got my height from my dad. He's six feet tall, and I'm 5'4 1/2" I already passed my mom, who is only 5'4" (only by a small amount, but it shows). My brother, however, has dark hair and eyes like my mom.