What happens is the sun emits millions of waves of UV radiation, which is light particles to us. A wave of this UV radiation or light, takes about 8 minutes to get from the sun to earth, when the UV rays finally gets to earth, it is then filtered through our atmosphere, some light waves get in, but many bounce off.
jumping forward a few steps,
this light or UV radiation, penetrates our skin cells, about a couple inches or so.
the skin cells absorb the light, a similar process is seen by plants as photosynthesis,
and that's how we get a tan....
I hope this helps:)
Answer:
Productive uses of thermal energy include but are not limited to: cooking, drying, heating, smoking, baking, water heating, cooling and manufacturing. New and efficient technologies exist that significantly reduce the amount of biomass needed for fuel.
Explanation:
The genotype of a heterozygous individual is Aa, of a homozygous dominant is AA, and of a homozygous recessive individual is aa.
<h3>What is a dominant genotype?</h3>
A dominant genotype is a set of gene variants characterized to have dominant alleles that mask the expression of recessive alleles in heterozygous individuals in cases of complete dominance.
In conclusion, the genotype of a heterozygous individual is Aa, of a homozygous dominant is AA, and of a homozygous recessive individual is aa.
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Antibiotic resistance occurs naturally and it is use as medicines as well as misuse of antibiotics in humans ans animals is accelerating the process.
Nowadays infections are growing such as gonorrhea, tuberculosis, pneumonia, etc all are becoming hard to treat or fight with them because of less effective antibiotics.Inappropriate uses of antibiotics spread antibiotic resistance bacteria.
Excessive use of antibiotics or use for wrong reasons can cause bacteria to became resistant and multiply rapidly in human body or environment. When bacteria develop the ability to survive exposure of antibiotics that are design to kill them or stop their growth. Young children, cancer patient and over age people at great risk.
To learn more about bacteria here
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Answer: Astronomers define the reflectivity of an object in space using a term called albedo. This is the amount of electromagnetic radiation that reflects away, compared to the amount that gets absorbed.
Explanation: But to answer the "Earth warming up" question, I'd have to say that for over millions of years, Earth's climate has warmed up and cooled down many times. However, today the planet is warming much faster than it has over human history. Global air temperatures near Earth's surface have gone up about 2 degrees Fahrenheit in the last century. However, other evidence suggests that the period of 2,000 to 3,000 million years ago was generally colder and more glaciated than the last 500 million years.
So, yes I do believe that the Earth is warming up but not to explode.
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