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harkovskaia [24]
3 years ago
7

Visible sunspots vary in number according to a cycle of how many years?

Biology
2 answers:
bija089 [108]3 years ago
6 0
On the average, visible sunspots cycle is about eleven years. But there can be variations in the cycle.
Alchen [17]3 years ago
4 0
Generally, the sun observes a solar cycle of eleven years. In this cycle, there are fluctuations in the activity, such as the ejected levels of solar radiation, and in the appearance of the sun, such as changes in the amount and size of sun spots, solar flares and other phenomena that occur on the sun's surface.
These changes also affect phenomena on earth, especially the auroras. 
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3 years ago
The Arctic Desert partially occupies the territory of which country? ​
serg [7]

Answer:

The ecoregion stretches 2,000 km west-to-east, and 1,000 km north-to-south, across the Arctic Ocean north of Norway and Russia. It covers the island groups of Svalbard (Norway), Franz Josef Land (Russia), Severny Island (Russia), and Severnaya Zemlya (Russia).

Explanation:

4 0
2 years ago
How many sets of primers are needed for dna profiling?
Marta_Voda [28]
Primers are small snippets of DNA homologous to different regions in a target gene. For any targeted DNA gene at least two primers are necessary to delimitate a DNA variable segment targeted to be amplified.
5 0
1 year ago
What is the difference between a kingdom and a species?
masha68 [24]
A species is the same animal while a kingdom is a varitie of species
6 0
3 years ago
Read 2 more answers
If an iron block is 7.9g and is cut into 4 pieces how much grams is each piece
solmaris [256]

Answer:

1.975g

Explanation:

If you cut the block into 4 equal pieces, then: 7.9÷4 = 1.975g

8 0
3 years ago
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