The average star cycle: nebula, protostar, main sequence, red giant, white dwarf. The massive star cycle: nebula, protostar, main sequence, super red giant, supernova, black hole, neutron star.
The star cycle is the sequence of changes that a star undergoes throughout its existence.
<h3>The evolutive stages of an<u>
average star</u> are </h3>
- Nebula: Stars are born from the nebula that is the dust and gas particles condensation due to gravity effect in the interstellar clouds
- Protostar: It is a more advanced level of condensation.
- Main sequence. Equilibrium between gravity and nuclear fusion helps the star keep stable as long as the fuel lasts. The two main types are
• <em>Orange dwarf</em><em>: </em>between the red dwarf and the yellow dwarf
• <em>Yellow dwarf:</em> Like the sun
- Subgiant: occurs when orange and yellow dwarfs finish their main sequence and start to run out of fuel, expanding.
- Red giant. After the subgiant stage, the star enters a giant phase. The star can reach a size of up to 100 times its current size.
- White dwarf. When average-sized stars run out of fuel, the red giant begins to disintegrate, losing its outer layers and exposing its core, which will become a white dwarf.
<h3>The evolutive stages of a<u> </u><u>
giant star</u><u> </u>are </h3>
- Main sequence. There are two main types
• <em>Yellow supergiant</em>. Extremely short phase. Almost no stars are known to be in this stage. The star swells on its way to becoming a red supergiant.
• <em>Red supergiants</em> are the largest stars in volume, but not in mass.
- Supernova. When fuel is over in the red supergiants, the gravitational collapse produces a violent explosion originating the supernova.
- Neutron star. A celestial body that remains as a remnant after the explosion gives rise to a supernova.
You can learn more about the life cycle of stars at
brainly.com/question/2437142
brainly.com/question/2456141
A) sulfide mineral: Contain sulfur plus a metallic element
B) sulfate mineral: Compounds that have a sulfur atom surrounded by four oxygen atoms
C) halide minerals: Contain elements like fluorine, bromine, iodine, or chlorine combined with metals. Stable salt is an example of this type of mineral
D) carbonate mineral: Compounds made up of a carbon atom that is bordered by three oxygen atoms.
<span>Pancreatic Juice and bile are poured through:
</span>
b) Two distinct ducts into duodenum (<span>The common hepatic duct collects bile formed by the <span>liver.)</span></span>
Answer: There are a total of 22 bones in the skull. The skull is not only made up of bones but also cartilages and ligaments. The facial skeleton does not include the teeth and the cartilage of the nose. The skull contains foramina or canals scattered throughout the skull bones.
Answer:
A control group setup in an experiment is used to see if there are other variables in play during the experiment. Say I was to test which type of blood is a shark's favorite, my control would be putting red paint in one of the set ups to see if the shark is just interested in the red color of blood, instead of the other types of blood.
Explanation:
