"It allows the reader to better understand the characters" is the contribution among the choices given in the question that <span>the author’s use of dialogue in the story. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer has helped you.</span>
Natural selection is the process in nature by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. Forexample, treefrogs are sometimes eaten by snakes and birds
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Natural selection is the term that's used to refer to the natural evolution over time of a species in which only the genes that help it adapt and survive are present. This idea was reported by Charles Darwin, the researcher behind many of our modern concepts of evolution.
In natural selection, a population will show genetic traits over many generations that help it remain best suited to its environment. These can be physical, structural traits like a skeleton or musculature that helps it live in that setting, or can even by physiological traits such as the presence of an enzyme in the digestive tract to help it break down the available food sources.
Examples of Natural Selection:
1. Skeletal Adaptations
Giraffes, lizards, and many other known species adapted to their environments through genetic changes to their skeletons. This form of natural selection meant that members of the population who didn't develop and present these skeletal changes died out. For example, giraffes developed long necks to reach food sources higher up in trees, so members of the giraffe population who didn't develop a long neck died out. At the same time, certain lizards in one region developed longer leg bones to help it climb up during periods of flood and to escape predators in the ground; shorter legged lizards of the same population died out until only the lizards with the long legs survived..
2. Coloration
Many species have been studied who've adapted to their environment through adaptions in coloring. Once the optimal coloration is present, natural selection occurs when members of the species without the adaptive coloring died out more quickly and therefore didn't reproduce as abundantly. Some example include the deer mouse, the peppered moth, and the peacock.
3. Bacteria
Bacteria are a common research subject when studying evolution and adaptation because some colonies of bacteria can produce several generations in one day, letting researchers see a "fast forward" version of evolution and natural selection. Some observed bacteria have included some who've adapted to new food sources that were previously unusable, as bacteria that have adapted to the presence of deadly antibiotics and exhibited traits that let them not only survive, but reproduce to generate offspring that are also resistant to the antibiotic.
4. Physiological
Different species go through changes over time that help them adapt to different environments, and humans are no different. One of the physiological changes that different groups of human beings have made involves the ability to digest cow's milk. In regions where cattle are not raised, the human population is often lactose intolerant, lacking the enzyme to break down the milk. However, in regions where cattle are grown domestically and their milk is used as a chief part of the food supply, those humans as a whole produce the enzyme needed to digest milk.
Pretty sure it’s
A. Cell division
Replication of DNA happens in interphase, s-phase
The answer here is D, and it's kind of obvious. But you probably already knew the answer and are just doing this for piece of mind.
Explanation: Just the fact that we don't know whether or not there even is extraterrestrial life rules out every other answer, without even needing to go in depth.
(Okay, I read your question completely wrong, it's asking for which one of these has been solved isn't it?)
This is tough because all of these other than D have been figured out. Go with the methane atmosphere then.
