A variable that is kept the same during an experiment is a controlled variable. Thus, the correct option for this question is A.
A variable that is purposefully changed in an experiment is an independent variable. Thus, the correct option for this question is B.
A variable that is changed, depending on the change in the independent variable is a dependent variable. Thus, the correct option for this question is A.
In experimental science, variables may be defined as a type of factor or information that can be changed during the course of an experiment. It is a type of factor that can be manipulated, controlled for, or measured in an experiment.
In experimental science, there are three types of variables are used. They are as follows:
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B. absorption of nutrients
C. breaking down complex carbohydrates
D. removing water from undigested waste
The main function of the large intestine is to remove water from undigested waste. Therefore, the correct answer is option d.
The large intestine, also known as the colon, plays a crucial role in the final stages of the digestive process. Its primary functions include:
The large intestine does not play a significant role in the digestion of proteins, absorption of nutrients (the majority of nutrient absorption occurs in the small intestine), or the breakdown of complex carbohydrates (most carbohydrate digestion occurs in the small intestine as well). Its primary functions are related to water absorption, feces formation, and the maintenance of a healthy gut microbiota.
Therefore, the correct answer is option d.
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The answer is D What is the main function of digestion?
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It can be prevented by wearing a protective vest.
It produces chemicals that can be inhaled.
It is found in synthetic dyes and cosmetics.
An agent able to cause DNA mutations is called mutagen. UV light is the most common source of radiation that affects DNA, but it is a weak radiation and it penetrates only the surface cells of your skin. However, UVA radiation is considered as a mutagen because it penetrates deep into the skin and can cause mutations.
UVA light is a mutagen because it can penetrate the skin and cause DNA damage. This damage can lead to mutations and potentially skin cancers. Protective clothing and sunscreen can help mitigate the risk.
UVA light is considered a mutagen because it has the ability to penetrate the skin and cause mutations. It does this by causing damage to the DNA in the cells of the skin. When UVA light hits the skin, it can break DNA strands or cause errors during DNA replication, which can result in mutations. Over time, these mutations may accumulate and lead to skin cancers like melanoma.
One way to protect oneself from UVA light is by wearing protective clothing or using sunscreens. However, prevention is not always complete, as some amount of UVA light can still get through these protective barriers.
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