1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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. 
You might be interested in
Hello can anyone help me out with this question please?
Sedbober [7]
Your answer is true. Working in teams has become more prevalent in the workplace today.

8 0
3 years ago
Read 2 more answers
How can interactions between alleles genes and the environment affect an organism's traits?
Nataly_w [17]
Genes code for proteins. That way they determine biological structures and functions. Besides genes, the environment has the great impact on the structure of an organism. Alleles and genes will give a trait, but the environment can affect it. For example, alleles that are responsible for height will give a person some average height. But if the person begins to train basketball at the early age (during growth), the person will overcome the average height. This is the effect of the environment and not genes. The other example is that if a person lives in a sunny region, the person will be tan.
4 0
3 years ago
The oxygen produced by the chloroplasts passes out the cell by A) Diffusion B) Digestion or C) Respiriration
Y_Kistochka [10]
The oxygen produced by the chloroplasts passes out the cell by Cellular Respiration. So the answer would be D :) 
7 0
3 years ago
Read 3 more answers
Population growth is the change in the number of ________ in a population over time.
lions [1.4K]
Population growth is the change in the number of INDIVIDUALS in a population over time. 
7 0
3 years ago
Select all that apply. Which of the following countries exclusively use the metric system? United States France England Canada
Mekhanik [1.2K]
All of these countries except for the United States use the metric system.  Please mark Brainliest!!!
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which system protects us from radiation and the vacuum of space
    6·2 answers
  • What organism produces about half of the oxygen on earth?
    6·1 answer
  • Genetic counselors are available for diagnosing some diseases, and for helping in family planning. if a genetic counselor examin
    15·1 answer
  • At first glance, it might seem counterintuitive with respect to energy use that many sharks must swim continuously or they will
    11·2 answers
  • Which of the following is a true statement cellular respirstion occurs only in plant cells cellular respirstion occurs only on a
    15·1 answer
  • Which structure is responsible for allowing material into and out of an animal cell?
    6·1 answer
  • Please HELP!!!!!!!!!!!!
    10·1 answer
  • PLS HELP IVE BEEN ASKING FOR 2 DAYS OML NOBODY WILL HELP ;( ME GO CRY
    10·2 answers
  • Can someone pls answer the first 2
    12·1 answer
  • LAB REPORT 8th GRADE SCIENCE EDGE
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!