Answer:The "three principal rays" which are used for visualizing the image location and size are: A ray from the top of the object proceeding parallel to the centerline perpendicular to the lens. Beyond the lens, it will pass through the principal focal point.
Explanation:
Answer: China, China of South-East Asia made rapid economic growth.
Answer:
Ozone depletion, gradual thinning of Earth's ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities.
Explanation:
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons).
Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders. UV rays also affect plant growth, reducing agricultural productivity.
We could improve the immigration system so that people don’t try to come in undocumented and make sure that when immigrants stay illegally on their visas they can get granted citizenship without the process taking 20+ years.