Biology High School

Which is the final event that occurs when a star is forming?

Answers

Answer 1

Answer:

the outer layer of the star expands

Explanation:

Gravity pulls gas and dust together. A protostar forms as mass increases. A black hole forms as the core collapses.

Answer 2

Answer:

Hence, the final event that occurs when a star is forming is that nuclear fusion begins under high pressure.

Explanation:

Related Questions

Which events take place in the light-dependent reactions of photosynthesis?
ERRE
O Light energy is converted sugars; sugars are broken down for energy.
O Light energy is captured by plants, light energy is used to make sugar.
O Light energy is converted to chemical energy; chemical energy is used to make sugar.
O Light energy is captured by plants; light energy is converted to chemical energy.
W
Markthina

Answers

Answer:

Explanation:

what is the process of transferring sea water to fresh water?

Answers

You can either boil it and it removes the bacteria by killing it with heat or by using a small amount of bleach or chlorine in it to kill off the bacteria. VERY LITTLE

Answer:

Desalination

Explanation:

desalination is a technique where the excess salt are removed from salt water or brackish water.

A large bar of solid gold is melted into liquid. The liquid is then poured into
molds to make a number of gold coins. Was this a chemical or physical
change? Explain.

Chemical, because the gold turned into something new and is no longer gold.

Physical, because the gold changed size and shape, but is still gold.

Answers

Answer:

It is physical, the gold is still gold and there has not been any chemical change. Melting, boiling, freezing, etc. are physical changes.

Can anyone help please

Answers

Answer:

Although secreted by the pancreas, glucagon directly impacts the liver as it works to control blood sugar levels. Specifically, glucagon prevents blood glucose levels from dropping to a dangerous point by stimulating the conversion of stored glycogen to glucose in the liver.

Explanation:

:) (i'm not supposed to tell you the answer but i can help you)

A type of asexual reproduction in which a prokaryotic cell replicates its DNA and divides in half, producing two identical daughter cells, is called

binary fission
conjugation
mitosis
transduction

Answers

Answer: binary fission, form of sexual reproduction in which paramecia and some prokaryotes exchange genetic information. I THINK this is right!

Answer:

The answer is binary fission.

Explanation:

Binary fission, asexual reproduction by a separation of the body into two new bodies. In the process of binary fission, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA.

Hope that helps you!!

Why is resource management of forest important for economic

Answers

Answer:

timber, plant medicinal resources, genetic materials, and recently a source for generating carbon credits.

Explanation:

What is the structure for each macromolecule (what does each one look like?)

Answers

Answer:

Within cells, small organic molecules are joined together to form larger molecules. These large macromolecules may consist of thousands of covalently bonded atoms and weigh more than 100,000 daltons. The four major classes of macromolecules are carbohydrates, lipids, proteins, and nucleic acids.

Need help quiz is here and this is the only answer I don’t know

Answers

Answer:

activation energy is the answer

Do molecules crossing a membrane using active transport go WITH or AGAINST the concentration gradient??

Answers

Against

The concentration gradient is the probability of where ions will go freely to try and make the concentration the same in each part of the cell. When ions want to cross into the membrane, most of them will have to go against the concentration gradient and will use energy to do so!

Hope that helps :)

How are DNA tests useful to solve a more mystery? Explain in your own words.

Answers

Explanation:

forensic scientists can compare DNA found at the crime scene from blood or hair to DNA samples taken from suspects if there is no match they may be able to rule out that suspect. if there is a match police would likely want to take a closer look.

how does air pressure affect weather

Answers

Answer:

Hewo, Kiluawa (sorry if i spelled it wrong)

Explanation:

High Pressure

Basically, high pressure occurs in an area if the atmosphere over that particular area becomes heavier. As a result, the heavy air above will come down to the Earth’s surface. And the air present in that area will move away to create space for the heavy air.

Commonly, the warmer months experience high pressure. You’re more likely to enjoy a comparatively dry and stable weather pattern in those months. Besides, you’ll find the skies in high pressure areas very clear. You’ll also feel a gentle breeze there that will cool down the surrounding areas.

Low Pressure

On the other hand, the air above a low pressure area is comparatively much lighter than the air below. As the heavy air on the Earth’s surface cannot go further below, it pushes away the lighter air above. As a result, a vacuum is created on the surface level and the air in the surrounding areas rushes towards it to fill up the void space.

Meanwhile, the rising air starts to cool down and form clouds in the sky. These clouds then come down to the Earth in the form of rain. Sometimes, snow is also formed depending on the temperature of the surrounding areas.

In general, colder months of the year experiences more low pressure situations. By now, you probably can guess why. The cold air on the surface level is heavier than the air above. And these low pressure areas are the reasons behind unstable weather conditions like snow, ice, rain, storm, etc.

Hope This Helps!

What does a food chain show the flow of between living things?

water
carbondioxide
oxygen
energy

Answers

Answer:

energy

Explanation:

cuz i did science

the food chain shows the flow of energy

I’m not sure what the answer is.

Answers

Answer:

The answer is A

Explanation:

If you are on the top a mountain and drop an apple, it
will fall to the ground, even though the apple is
gravitationally attracted to you. Why?
a)Earth is larger and has a much stronger
gravitational pull
b) Apples always fall down
C) Centrifugal forces pull the apple to the Earth
and that is stronger than your gravitational pull
d) None of these

Answers

2.) Waxing crescent-The moon is partially illuminated increasing in size, appearing as a crescent shape.

3.) First quarter-The moon is 90 degree east of the sun and appears as a half moon shape.

4.) Waxing Gibbous-The moon appears as gibbous shape.

5.) Full moon-The moon is on the opposite side of the earth from the sun, and its entire illuminated side is visible.

6.) Waning gibbous-The moon is partially illuminated and decreasing, appearing as a gibbous shape.

7.) Third quarter-The moon is 90 degree west of the sun and appears as a half moon shape.

8.) Waning crescent-The moon is partially illuminated and decreasing, appearing as a crescent shape.

The cycle of phases repeats approximately every 29.5 days, from new moon to new moon. Therefore, the correct option is A.

For more details regarding phases of the moon, visit:

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. An astronaut weighs 120 Newton’s on the moon, where the strength of gravity is 1.6 N/Kg. What is her
mass in Kg?

Answers

Answer:

75 kg

Explanation:

answer is above

Assignment: 03.01 Seasons of Change

Answers

Answer:

What's the question? There's no specific question there

2. Cell division by mitosis produces:
A. Two cells identical to each other but not to the parent cell
B. Two cells identical to each other and to the parent cell
C. Two cells with half the amount of DNA as the parent cell
D. Two cells with twice the amount of DNA as the parent cell

Please hurry !!

Answers

Answer:

Explanation:

I think that is tha Fact

1. How do you think rapid changes in the chracteristics of habitats affect the niches of
animals occupying that habitat?

Answers

Answer:

The rapid changes would make an organism change their land, environment around them, and the food web

When the habitat of the animals living in it changes, both the animals and the habitat change. It changes the biotic and abiotic factors of the niche and ecosystem. Habitat is part of a niche.

What is the impact of the changing habitat?

Niche is a broad space in which the particular animal roams, searches for food, and reproduces, but habitat is a part of the niche where the animal spends most of its life. Human interventions, such as cutting down forests for industry, roads, and so on, have an impact on wildlife. Due to this, the temperature of the earth keeps on increasing, resulting in climate change, global warming, the melting of ice, a rise in water levels, etc.

If these changes happen, then animals will have difficulty living in their habitat. The environment will not be favorable for living, and both abiotic and biotic factors will be disturbed, such as the fertility of the soil, which is affected by fewer trees. Other animals affect by this change too.

Hence, in this way, the change in habitat changes the niche.

Learn more about the habitat and niche, here

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How do we detect the cosmic microwave background radiation?

A. by looking for a glow in the night sky

B. by looking for radiation at the blue end of the spectrum

C. through magnifying glasses

D.through radio telescopes

Answers

Answer:

D. Through radio telescopes

Explanation:

The way we are able to detect them is by radio telescopes

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