The molecules that contain instructions for building proteins are <em>B.) DNA molecules</em><em />
DNA consists of molecules called nucloetides. Each nucleotide contains a phosphate group, sugar group, and nitrogen base. There are four bases: cytosine (C), thymine (T), adenine (A), and guanine (G). The order of these bases is what determines the genetic code, or DNA instructions.
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This is an example of adaptation. by hiding in the plain sight,they not only avoide the enemy that might be looking to eat them,but also stay undetected to their own preys. that way they can hunt without being sighted. they adapt to the conditions around them and make the best use of it.
Answer:
double fertilization
Explanation:
Flowering plants or angiosperms are seed-producing plants with the ability to produce reproductive organs-flowers and fruits with seed in it (unlike gimnosperms which contain naked seed). Another distinctive feature of angiosperms is their reduced gametophytes. This feature most likely reduces the time between pollination and fertilization. Fertilization in flowerin plants is double, meaning that two sperm cells fertilize ovule cells(egg cell and central nuclei cell): one forms diploid zygote which will develop in embryo, while other form triploid cell which will develop into endosperm (provides nutrition for the embryo).
<span>Darwin essentially argued that living things are engaged in a 'struggle for existence' and that any features they possess which affect their survival and reproductive potential will be subjected to continuous selective pressure. This might be seen as his 'new big idea' in the whole evolution thing. This means that through time those features which confer an advantage in the struggle for life will be retained and those that constitute a handicap will be lost. Not for individuals but for the race. So the composition of the population (or species) changes through time, eventually producing such widely divergent forms that cannot interbreed, and are so called separate species. That is a brief outline of the theory.</span>
