Answer:
The answer is <em>false</em>.
Explanation:
Although very popular in crime novels and TV shows, microscopic hair analysis isn't as reliable as it may seem. It was widely used during 1950-s and 1960-s as the best test to match a hair sample with the suspect, but modern tests proved it to be wrong. Microscopic analysis can give some information about the hair sample such as origin (human, animal or synthetic fiber), color, pigment distribution... For example, if the hair sample found was brown, and the suspect was black-haired, we could claim that he was Innocent. But if the found hair was black, does that mean that we could be absolutely sure that the suspect is guilty? Of course not, microscopic analysis can not provide evidence for that claim. On the other hand, the best method for matching biological samples, at the present time, is DNA analysis.
Answer:
The mass of a substance is constant according to the law of conservation of mass.
Explanation:
According to the law of conservation of mass, matter can never be created or destroyed in a chemical reaction, even though it may undergo change from one physical state to another.
This means that in an isolated or closed system, the mass of matter will always be the same irrespective of the type of change that matter undergoes. This is so because, the mass of a substance is a measure of the quantity of matter in that substance and is constant. The number of particles does not change during a change of state, only their spacing and arrangement. In solid ammonia, the particles are more compact and arranged, whereas in gaseous ammonia, they are more randomly spaced out.
Answer:
The correct answer would be "The percentage of dark brown sea lions will increase, and the percentage of light brown sea lions will decrease".
Natural selection refers to the natural phenomenon by which organisms which are better adapted to the changing environment tend to survive and reproduce more as compared to the organisms which are less adapted.
As aquatic environment make dark brown sea lions more reproductively successful thus, the offspring of dark brown sea lions would have better chances to reach the reproductive age.
Hence, with the percentage of dark brown sea lions would increase and that of light brown sea lions would decrease.
