Answer:
Evacuate to another location before the event takes a turn for the worst!
Explanation:
<u>Answer:</u> The correct answer is Option b.
<u>Explanation:</u>
Nuclear fusion reaction is defined as the reaction in which lighter nuclei combine together to form a single heavier nuclei.
Another name for helium nuclei is alpha particle.
For the given options:
- <u>Option a:</u> The CNO cycle
This cycle is named as carbon-nitrogen-oxygen cycle. In this cycle, carbon absorbs a proton to form nitrogen which further absorbs a photon to form oxygen. Thus, helium particles are not getting fused in this process.
- <u>Option b:</u> The triple alpha process
This process is a set of nuclear reaction in which 3 alpha or helium nuclei combine together to form carbon nucleus.
The equation representing the fusion process follows:
- <u>Option c:</u> Photo dissociation
This is defined as the process in which a chemical compound is broken down by photons. Thus, helium particles are not getting fused in this process.
- <u>Option d:</u> The proton-proton chain
This process is a set of nuclear fusion reactions by which stars convert hydrogen nucleus to helium nucleus. The chemical reactions for this process are:
Here, fusion of protons takes place.
Hence, the correct answer is Option b.
Answer:
Explanation:
a. ozone-depleting chemical production and use: Ozone depletion chemicals are Chlorofluorocarbons (CFCs), chlorine,hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, hydrobromofluorocarbons, chlorobromomethane, and methyl chloroform. etc. This chlorofurocarbon is responsible most for ozone depleting chemical production and use. This gas is used in the refrigerator,A.c and others. Those chemicals deplete the ozone layer of the atmosphere which absorbed the radiation of ultra violet rays. The ozone depleting gas mainly comes from the factories, car and other human productions. This damage human health ,plants animals health and other. Thus the ozone-depleting chemical production and use by human being make changes to the environment.
b. acid deposition: Deposition of acid on earth can present in either wet or dry form. Emission of polluted substance , mainly sulfur dioxide and nitrogen oxide using in car,factories,huge industries and power plant which are important human creation get out by human activities and mix with the air. Then it comes back on the earth by the form of acid rain and deposit on the earth. This affects environment, plant, animals and human body also. Thus human caused acid deposition or acid rain makes changes on environment.
c. climate change: Climate change also happen by human activities. Emission of gases from industrial factories, car etc which are the human creation increase global warming. Greenhouse effect also occurred by human activities. This global warming mainly caused by different economic system which put a risk on environment. Climate change impacts on agriculture, human health, food chain, biodiversity , rainfall, which cause changes on economic system by low growth of food grain, low production,human creativity etc.
Thus these three make changes on the earth environment. and affects on economic system by human activities.
Answer:
The blank can be filled with the suitable option which is Rock Avalanche.
Explanation:
Rock Avalanche can be defined as common process of movement of mass down the slope rapidly where the material which is transported down-slope is a large dry rock or low temperature fragmented ice which after sliding down breaks into small fragments
