Price goes up....supply and demand.......
A "stimulus" is basically an event that happens in the outside environment that triggers a response. So, when you touched the dog's ear, that's a stimulus. The twitch is a response! So, A is correct. But just to be sure, let's look at the rest.
Artificial selection (B) is basically breeding: when humans breed organisms in order to obtain desired traits, like breeding dog species--this is not what our example is talking about.
Natural selection (C) is a similar process. When an organism mutates, but it actually helps it survive, it is more likely than the others to survive long enough to have babies. These babies are likely to have the helpful mutation, and so are their babies, and theirs, until a good portion of them have the mutation. This is NOT the example above!
And D, reproduction--well, let's just say it would involve a female dog and lots of babies, but that's not related to our example, so that isn't right either. The answer is A: a response to a stimulus.
Answer: A
Answer:
they were around the nile river so, they have fertile good soil, they produce food for themselves and sold too, they had walls round with a large wide road going through the city
Answer:
earning a bachelor’s degree to become an interior designer
Explanation:
Ali's talents in design and detail fit best in this answer
Canada supports efforts to ensure that every child receives quality primary and secondary education,and works to reduce barriers and help narrow education gaps for women and girls.
