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Dahasolnce [82]
3 years ago
9

What causes sun spots ?

Biology
2 answers:
larisa [96]3 years ago
8 0

Answer:They are caused by the Sun’s Magnetic field welling up to the photosphere

evablogger [386]3 years ago
6 0
The UV rays cause sun spots due to reaction from the radiation.
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Do Different cell types also have special duties, like building skin or bone, pumping out hormones, or making anti-bodies.
Schach [20]

Answer:

Yes, different cell types also have special duties, like building skin or bone, pumping out hormones, or making anti-bodies.

Explanation:

Cell is the basis structural and functional unit of a living organism. The body of a human is composed of trillions of cells that are organized in around 200 types of cells.

<u>A tissue is simply a group of specific kind of cell that have  a specific role.</u>

  • For example: The nervous system contains cells called neurons that have ability to transmit message from one place to another and allow us to respond to any environmental stimuli, such as heat, cold, danger etc.
  • Skin cell is composed of cells that have a role in protecting the body against the attack of harmful microbes. They also protect have role in building new skin cells and adding the protection to our body.
  • Blood cells have a role in providing us immunity (for example white blood cells) therefore, make us better able to protect ourselves from danger of diseases.
  • Muscle cells help us in moving our organs as well as allowing the whole movement from one place to another.

Thus we see that different types of cells have special functions and all these different cells coordinate with each other to make an organized and functioning body of a living organism.


Hope it help!

7 0
2 years ago
The density of water is:<br> 1.0 kg/L<br> 0.1 g/ml<br> 10 g/L<br> none of these
natulia [17]
The density of water is 1.0kg/L

5 0
3 years ago
The Increase of certain types of gases in the atmosphere has contributed to the problem of global warming. all these gases are
Aleks [24]
Fossil fuels and green house gases which burn holes in the ozone layer of the atmosphere causing global warming
4 0
3 years ago
Musculo que tiene las características tanto de musculo esquelético como de musculo liso. Se encuentra en el corazón y sus contra
Andrei [34K]

Answer:

músculo cardíaco

Explanation:

Los 3 tipos de tejido muscular son 1-músculo cardíaco o miocardio (involuntario), 2-músculo liso (involuntario) y 3-músculo esquelético (voluntario). Las células del músculo cardíaco, las cuales son conocidas como 'miocardiocitos', poseen una apariencia estriada y forman la pared del corazón. Los miocardiocitos son alargados, ramificados, y poseen un núcleo central (son células uninucleadas, a diferencia de las células del músculo esquelético, las cuales son multinucleadas). Además, los micardicitos son más cortos (80 a 100 µm) y más anchos (aprox. 15 µm) que las células del músculo esquelético. Los miocardiocitos presentan uniones especializadas conocidas como discos intercalares, los cuales son un tipo de complejo de unión entre los límites de dos cardiomiocitos. En el citoplasma de los cardiomiocitos se encuentran las miofibrillas, las cuales son estructuras contráctililes que les confieren a las células musculares sus propiedades características de contracción y de elasticidad. En estas células (cardiomiocitos) las miofibrillas se disponen de manera longitudininal con un patrón estriado.

7 0
3 years ago
Do bananas contain radiation?
Ne4ueva [31]
<span>You are right in that bananas contain potassium and K-40 is a naturally occurring potassium isotope AND the K-40 in an average banana does decay at a rate of about 31 ATOMS per second (half-life is > 1 billion years). This is an extremely low level of radiation and nothing to worry about. Bananas will definitely NOT cause a "nuclear winter."</span>
7 0
3 years ago
Read 2 more answers
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