4) Polaris
Stars emit light with energy generated by nuclear fusion, think of the Sun as an example. Polaris is a star, it's the brightest star in the little bear constellation, and therefore the correct answer.
Answer:
To change a toponym of one place is not so easy to do. This process is usually connected to political changes in different parts of the world.
The toponym change is a sensitive topic, as the name of a place represents the symbol of that place, its identity, and ethnicity. One toponym is related to that place and to people from that place.
Explanation:
Also, when changing the toponym, people should take care of the new name, if it will be in a context of nationalism or internationalism. People connect te name of the place with the location of the place, so it is not easy to adopt a new name, as part of identity is fading.
If the toponym is changing, it has to fit the society, what is the meaning of that new toponym, is it related to the nation, the historical background of the toponym, etc. Those are elements that are influencing the acceptance of a new toponym.
I believe the answer is D. The NASA mission which sent a probe to collide with a comet's nucleus is the Deep Impact. It is the first mission sent in order to see the interior of a comet. The comet that was aimed was called the Comet Tempel 1.
Answer:
secondary succession
Explanation:
In the described scenario we have a destruction of an ecosystem because of natural causes, volcano in this case. All that has left after the volcanic eruption has been barren land. After this has happened life started colonizing the volcanic island again, in a process known as primary succession. In the primary succession it is the organisms that have the lowest of requirements for survival that will inhabit the island. Over time, as they die, they will provide biomass for the ground, thus soil will start to form. Once there's soil formed a process called secondary succession will start. In this process the island will start to be inhabited by some plants and smaller animals. These plants and animals will contribute to further enhancing the living conditions on the island, and the island will gradually be getting larger plants and larger animals, thus a new ecosystem will be formed on the place of the old one.
