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
Blizzard [7]
2 years ago
9

Dark, cooler areas on the sun's surface are called ____.

Biology
2 answers:
luda_lava [24]2 years ago
7 0
They are called
a. sunspots
Fudgin [204]2 years ago
3 0

The correct answer is A. Sunspots

Explanation:

The Sun is the star that is the center of the Solar system where Earth is located and that is mainly composed of hydrogen, helium and other elements such as oxygen, carbon or iron. In terms of the photosphere or the outer shell of the Sun this is a plasma layer that is mainly observed as uniform in color, but also presents dark areas that are called sunspots, these are cooler areas in the surface of the sun that exist as a result of the magnetic field of the sun; additionally, this can appear individually or in groups which are called Sunspot Groups. Therefore, the dark, cooler areas on the sun's surface are called Sunspots.

You might be interested in
Blood calcium is regulated by a hormonal control system. normal blood calcium levels are 8.5 to 11 mg/dl. when calcium levels ar
sattari [20]
FEEDBACK MECHANISM is a regulatory mechanism in which presence of certain level of substance promotes or inhibits its further formation.
The regulation of secretion of Thyrocalcitonin from thyroid gland is an example of such feedback control mechanism. It occurs in two ways:

a) When calcium levels are too high, the thyroid detects this and releases calcitonin. calcitonin stimulates the kidneys to release more calcium and it causes bones to absorb more calcium and build more matrix. This is called Negative Feedback Control.

b) In response to a decrease in calcium levels, parathyroid hormone is released, which causes the release of calcium from bone and retention of calcium in the body, and the calcium level rises back to normal. This is called Positive Feedback Control.
4 0
3 years ago
A(n) propagates down an axon of the first neuron like a wave across the ocean until it reached a gap between neurons called
svetoff [14.1K]
Actually neruron regenerate dendrites
7 0
3 years ago
What’s wrong with a gorilla if she won’t eat and interact with other gorillas in the zoo
tester [92]

Answer:probably pregnant or depressed

sorry if it didn't help

7 0
3 years ago
How would the bacteria most likely respond to survive
mezya [45]

Answer:

the respmifuv fded

'v;ebn\

]'fd[v';mlgre ,.al';pk]jinbl k,efmdv;lsk[ojibk n,m./';lpkojc nlkoivhubkn ,mkdfcdf ncx kbjcx

Explanation:

5 0
3 years ago
Why do you think that plants have both Chloroplasts AND mitochondria?
LuckyWell [14K]

Answer:

Explanation:

ells need both chloroplasts and mitochondria to undergo both photosynthesis AND cell respiration. After photosynthesis, which chloroplasts are needed for, which yields oxygen and glucose, plants need to break down the glucose and they use cell respiration to do this, which happens in the mitochondria.

4 0
3 years ago
Other questions:
  • The A and B antigens in humans may be found in water-soluble form in secretions, including saliva, of some individuals (Se/Se an
    9·1 answer
  • DNA replication allows the basic units of heredity found on segments of DNA, called ________ , to be passed on from parent to of
    13·2 answers
  • Oles live underground and have several adaptations to this environment. For what purpose are their oversized paws and claws most
    6·2 answers
  • According to the theory of isostasy, which statement must be true?
    9·2 answers
  • how would plant populations be affected if the populations of decomposers such as earthworms decreased dramitically
    8·1 answer
  • Based on the data on this map where is most of earths water vapor?
    6·1 answer
  • Select the best answer for the question. 8. According to the cladogram of primates shown, which key cultural feature was shared
    15·2 answers
  • How does cholesterol affect digestion and bile acids?
    6·1 answer
  • The diagram below shows a hand warmer. It uses a controlled burn of a type of lighter fluid called naphtha.
    14·1 answer
  • Help pls! The chart below shows the primary energy production methods in two locations.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!