Answer:
Fusion
Explanation:
Supernova Definition:
The supernova occurs after fusion begins to pile up iron in the high-mass star's core. Because iron fusion cannot release energy, the core cannot hold off the crush of gravity for long. In the instant that gravity overcomes degeneracy pressure, the core collapses and the star explodes.
Fun Fact!
Approximately one supernova occurs every second. Supernova happens more often than you might think: One occurs somewhere in the universe every second!
Answer:
Equinox
Twice during the year when Earth's poles are not pointed toward or away from the Sun. At this time, the direct rays of the sun strike the equator and both poles are at a 90 degree angle from the Sun. both hemispheres receive an equal amount of sunlight-12 hours each .
Answer: b
Explanation: Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock
Explanation: They both study and address environmental issues. The ultimate goal of both, and the similarity between them, is to improve the environment as a place of life for each of us. In both cases, meaning similarity, the role of man in improving the living environment is emphasised. The scientific approach reveals and gathers significant scientific facts and knowledge that can again be used by various environmental activists in protection of the environment in terms of both prevention and restoration of polluted natural resources.
The difference between them is that environmental science uses scientific methods to study the environment, and it can be said that they use an objective scientific approach to this problem. Environmentalists, on the other hand, use a wider range of ways to deal with this problem, often with an emotional and biased approach. Environmentalists take a wide variety of actions, which of course are not just scientific, in the pursuit of environmental improvements, living conditions. So environmental science is looking for knowledge on this subject, such as human interaction with nature and vice versa pointing it only to scientific facts within the institutions intended for such a thing. Again, on the other hand, environmentalists often have political appearances on this issue, and then they often perform dramatically in order to point out in important political places human impact on the environment, which can be detrimental to it and ultimately pernicious to the people themselves. So environmentalism can be said to be a kind of social concern for the environment and people, while environmental science about the environment with only scientific facts, and with that knowledge collected, emphasises the importance of environmental sustainability.
