By combining the DNA of two different organisms.
Answer: Colored light
Explanation: Sunlight is emitted from the Sun's photosphere. A fraction of the light that travels from the Sun reaches Earth. It travels as light in a range of wavelengths, including visible light, ultraviolet, and infrared radiation. Visible light is all the light we can see with our eyes.
If they both disagree with each other than they will both work harder on trying to figure out the real answer. Or they will find something important that they didn't plan on finding and now we have the cure for cancer
When the population is large and dense.
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Answer: more cows means the farmers will have a higher rate of income of dairy goods. With more dairy goods from the cows, the farmers will be able to make more money and they will be able to make a profit greater than the cost of buying the cows.