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kaheart [24]
2 years ago
6

What causes sunburn? Why do we have trouble perceiving the energy that causes it?

Biology
2 answers:
Alenkasestr [34]2 years ago
4 0

Answer:

sunburn is caused by too much exposure to ultraviolet rays.

Explanation:

Melanin is the dark pigment in the skin's outer layer that gives skin its normal color. When your skin face too much exposure to sun. UV rays in sun destroys the melanin due too which sunburn is caused

anzhelika [568]2 years ago
3 0
Infrared waves have less energy than visible light waves. Infrared waves are longer with more space between each high and low. Ultraviolet waves have more energy than visible light does. It's this energy that can hurt us.
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Which is produced immediately after a plant sperm cell fertilizes an egg cell?
Katyanochek1 [597]
A zygote is immediately formed after fertilization between two gametes. This cell is eukaryotic and made up of a combination of the DNA in both gamete. Zygote contains all the hereditary information essential in the formation of a new individual.
6 0
3 years ago
Pea plant clones are given different amounts of water for a three week period.
pentagon [3]

Answer:

independent variable: the different amount of water

Explanation:

The independent variable would be the <u>different amount of water supplied to the pea plant clones.</u>

<em>The independent variable is the variable inputted by the researcher during an experiment whose value directly affects the dependent variable. It is the variable that is manipulated during experiments in order to see the kind of effects they produce on another variable - the dependent variable.</em>

In this case, <u>the amount of water supplied to each pea plant would directly affect the height of the pea plants.</u> Hence, the amount of water supplied to the pea plants is the independent variable while the height of the plants is the dependent variable.

6 0
3 years ago
How does mutation relate to variation
Anastasy [175]

Answer:

Mutation is the source for new genetic variation: Genetic variation is brought about by random mutation. Without mutation, genetic variation cannot occur. Mutation is a change in the genetic code in DNA and can lead to a change in the protein that is coded for that segment of DNA.

Explanation:

Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.

8 0
3 years ago
Chain Pickerel is a freshwater fish that is a member of the pike family. Chain Pickerels are found along the Eastern coast of an
Kipish [7]

Answer:

the dissolved oxygen of the water decreases.

the fish need the oxygen for respiration, breathing through their gills.

Explanation:

The salinity decreasing doesn't affect the pickerel, because it's a freshwater fish. no salt needed.

more light penetrating the water just means that more aquatic weed or grasses would grow, giving the pickerel more area to spawn their eggs.

temperature increase in the summer has no affect on the fish, since the spawning happens in late winter.

8 0
3 years ago
The maps above show the arrangements of Earth's continents and oceans 65 million years ago and at present. Which of the followin
aleksklad [387]
A- tectonic plate motion caused the Atlantic Ocean basin to increase in size
5 0
3 years ago
Read 2 more answers
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