Yes, science is used for all of our questions. However, they are just the most thorough educated guesses we have as we are doing the best we can with the tools and evidence we have available.
the two lower GI system procedures that involve a endoscope is the colon, or rectum. They are done to diagnose or treat any irregularities or diseases
The correct answer is (A)
Burning of wood is a chemical change as new substance is formed during the burning of wood which is not reversible.
Now, what happened during the burning of wood?
In the case of burning wood, stored potential energy( in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion that requires oxygen. We can also say that combustion is change of potential chemical energy into kinetic energy in the form of heat.
.25
This is because 1/4 = .25
To find the allele frequency, you need to find the decimal representation of the fraction.
For example: If an allele makes up four twentieths of a population's alleles, then the frequency would be .2 (4/20 = .2)
If you are talking about insects then they are called castes. hope this helps!