All categories

3 years ago

SPACE! What is a main sequence star? What event causes a star to leave the main sequence?

Biology

2 answers:

german3 years ago

6 0

Explanation:

The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

makvit [3.9K]3 years ago

5 0

A main sequence star burns through the hydrogen in its core, reaching the end of its life cycle. At this point, it leaves the main sequence. Stars smaller than a quarter the mass of the sun collapse directly into white dwarfs. When stars run out of hydrogen, they begin to fuse helium in their cores. This is when they leave the main sequence. High-mass stars become red supergiants, and then evolve to become blue supergiants. It's fusing helium into carbon and oxygen.

You might be interested in

Apoptosis differs from necrosis in that necrosis:_______ a. requires the reception of an extracellular signal. b. causes DNA to

mote1985 [20]

Answer:

c. causes cells to swell and burst, whereas apoptotic cells shrink and condense

Explanation:

These two mechanism are responsible for death of cells in multi cellular organisms.Apoptosis is naturally occurring process which is well organised and programmed.It is ensures the automatic death of old and worn out cells, needed for certain cellular developments. This is demonstrated by DNA fragmentation,cell shrinkage,and the break down of the nuclear walls.It can be initiated through two pathways of intrinsic and extrinsic,The latter leads to death from internal factors,while in the former is when external factor causes the death .

However,when cell death is influenced by external factors(toxins) in the cell environments,which lead to unpredictable or unregulated process leading to cell death ,the process is called Necrosis.it is demonstrated with the swelling and busting of the cell.and characterised with inflammation. It is an accidental death which causes injuries to the cells and tissues.

7 0

3 years ago

The user needs to drag the slider bar in an upwards direction in order to completely melt away a body layer when in the dissecti

sergey [27]

Answer:

False

Explanation:

During the dissection study the body is kept in laying position so that the scientist can easily perform experiments. The body is kept in laying position not in upward position. The body in upward position will have gravitational effect on the fluids and the body layer will not melt.

3 0

3 years ago

Part F

Ronch [10]

Answer:

Outside factors are not always constant meaning that there is little way to control them.

Explanation:

5 0

3 years ago

Porque las primeras sociedades hicieron un corto impacto en el medio ambiente?

slamgirl [31]

Answer:

tat u want me to come back home home

Explanation:

jzisksk Welcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereTap on a clip to paste in the text boxWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved hereWelcome to clipboard, anytime you copy will be saved hereSlide clips to delete themWelcome to clipboard, anytime you copy will be saved here sdI I wyeuu

5 0

3 years ago

Which statements describe ways that science meets society’s needs? Check all that apply A scientists investigate a new way to cl

Serhud [2]

Answer:

bruh why u delete my answer told yall u trash

Explanation:

4 0

3 years ago