Answer:
hi it's sunny day bc the sun is sunny
Answer: D. changes direction
Explanation: A lens works by refraction: it bends light rays as they pass through it so they change direction.
Hope this helps
Advantages of Free Trade:
The advocates of free trade put forward the following advantages of free trade:
(a) International Specialization:
Free trade causes international specialisation as it enables the different countries to produce those goods in which they have comparative advantage. International trade enables countries to obtain the advantages of specialisation. First, a great variety of products may be obtained.
The two tools used are:
- A relationship existence between a galaxy's distance from Earth and also that of its speed.
- The findings in the 1960s of the presence of cosmic microwave background radiation.
<h3>What evidence is collected by each tool?</h3>
The evidence to support the big bang are:
- There was found to be some red shifts of a lot of galaxies which connote that the universe is widening.
- Due to the widening of universe, new elements were formed such as hydrogen, deuterium and others.
- Microwaves were found by orbiting detectors.
Therefore, The two tools used are:
- A relationship existence between a galaxy's distance from Earth and also that of its speed.
- The findings in the 1960s of the presence of cosmic microwave background radiation.
Learn more about Astronomers from
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