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Answer:
1: The formation of elements heavier than iron and nickel requires the input of energy. Supernova explosions result when the cores of massive stars have exhausted their fuel supplies and burned everything into iron and nickel. The nuclei with mass heavier than nickel are thought to be formed during these explosions.
Explanation:
2: The more luminous they are, the more reactions are taking place in their cores. Massive stars live shorter lives than the common small stars because even though they have a larger amount of hydrogen for nuclear reactions, their rate of consuming their fuel is very much greater.
The reasons why DDT is classified as a persistent organic pollutant are;
- DDT can be used to control diseases, such as malaria and typhus, that are spread by insects.
- DDT is detected in food worldwide and the general human population is most commonly exposed to the toxin through food.
Persistent Organic Pollutants can be regarded as toxic substances which are made up of organic chemical compounds.
These are industrial chemicals such as;
DDT is classified as a persistent organic pollutant because of it's usefulness in control diseases and it is been found in food stuff across the globe.
Learn more about DDT at;
brainly.com/question/14154063
The elements of a good study environment are that it must be well lit, the resources are near, it is quite and it is clutter free.
The correct options are A, B, C, E.
Study environment is a term used to describe the physical, psychological, and social settings that influence how you perceive your studies and your well-being as a student. Although the phrase "study environment" is frequently used, the law frequently refers to the workplace of students.
The key is to select a place with few distractions, a quite, soothing setting, clutter free where you can concentrate and do your task. You may teach your brain to focus just on studying and not on your to-do list or other distractions by designating a specific place for your schooling.
The complete question is
What are the elements of a good study environment? Check all that apply.
A. It is well lit
B. Resources are near
C. It is quiet.
D. A friend is nearby
E. It is clutter free.
To learn more Study environment, refer
brainly.com/question/14580267
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