What causes black holes to form?

Answers

Answer 1
Most black holes form from the remnants of a large star that dies in a supernova explosion. (Smaller stars become dense neutron stars, which are not massive enough to trap light.) ... When the surface reaches the event horizon, time stands still, and the star can collapse no more - it is a frozen collapsing object.

Related Questions

Do you agree that farming is good for the society? Why?

Answers

Answer:

Yes ,I do agree that farming is good for society

Explanation:

Why do I belive this because farming is apart of the circle of life,We plant,it grows it feed animals and animals feed us. And it keeps going on and on again.

What is the metabolic process that breaks down organic molecules to release energy to be used by cells?
A. cellular respiration
B. light dependent cycle
C. light independent cycle
D. photosynthesis​

Answers

Cellular respiration

Cellular respiration in living tissues is reduced at low temperatures. The amount of kinetic energy needed for chemical reactions like cellular respiration to occur decreases as temperature rises.  Thus, option A is correct.

What importance of cellular respiration in an organism?

As oxygen tension dropped, so did breathing rate, which eventually reached nil at low oxygen tensions.

Cell density had no bearing on this outcome. We provide a model to explain the observed impact of oxygen tension on cellular oxygen uptake.

As a result, increased cellular respiration is often associated with warmer temperatures.

Carbon dioxide concentration: The rate of respiration is inversely correlated with carbon dioxide concentration.

Increased carbon dioxide levels and a lack of oxygen have a negative impact on aerobic respiration rate.

Therefore, cellular respiration  is the metabolic process that breaks down organic molecules to release energy to be used by cells.

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When planning an investigation, the _______ are the steps you take to complete an investigation.

Answers

Answer:

When planning an investigation, the scientific method are the steps you take to complete an investigation.

Explanation:

What effect does increase salinity have on the density of water?

1. No affect unless temperature also changes

2. Decreases density

3. Increases density

Answers

Answer:

3

Explanation:

For example,The density of seawater depends on the content of salt. It is known that the density of salt is 2.165g/cm3, so the more salt, the greater the density of mixed liquid.

Answer:If you know that dissolution of salt only marginally affects the volume of the solution, how would you expect the density to evolve? It should reasonably increase.

Explanation:

at a given temperature, Should salts be dissolved in the water, and the volume remains reasonably constant, the density

. A solute binds water molecules around itself in a coordination sphere, and should a salt be dissolved, both anion and cation must be solvated; hence an increase in solution density with respect to water.

The preganglionic fibers of the sympathetic nervous division originate in segments ____ of the spinal cord and first enter the ____ ganglia.

Answers

Answer:

T1 to L2 ; Sympathetic Chain

Please help will give brainly

Answers

Answer:

4 meters

Explanation:

Which of the following describes asexual reproduction?

Answers

where are the answers at??

NO LINKS HELPNEEDED ASAP
which of these is most important for the testing of a new drug to determine?

A. its name

B. its effectiveness

C. its cost

D. its flavor

Answers

Answer:

B. its effectiveness

Explanation:

Obviously, a drug (or any medical treatment) should be used only when it will benefit a patient. Benefit takes into account both the drug's ability to produce the desired result (efficacy) and the type and likelihood of adverse effects (safety).

Answer:

When dealing with drugs like Corona virus vaccines i think the effectiveness is most important in that case but when dealing with may be children's syrups the flavour could be most important

Which type of competition happens
between two organisms of the same
species?
A. interspecific
B. intraspecific
C. invasive

Answers

Answer: intraspecific competition

hopes this helps.

Answer:

A. Interspecific is my best guess.

Explanation:

“Inter” means inside, so I’m guessing it would relate to the organisms being of the same species. “Intra” means outside. And invasive just doesn’t make any sense.

The scientific community disagrees about _______. A. The rate of global climate change b. The occurrence of global warming c. The need for action d. All of the above Please select the best answer from the choices provided A B C D.

Answers

The scientific community disagrees about the rate of global climate change (Option A). The occurrence of global warming is widely accepted by the scientific community.

Global climate change refers to the fluctuations in temperatures worldwide.

Global climate change is caused by the use of fossil fuels such as oil, coal and natural gas, which are known to be associated with the increasing concentration of greenhouse gases in the atmosphere.

The greenhouse gases include, among others, carbon dioxide (CO2) and methane (CH4).

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Answer:

a

Explanation:

Which statement is true?(1 point)

Mendelian traits cannot be shown on a bell curve.

Mendelian traits are controlled by multiple genes.

Mendelian traits follows a normal distribution.

Hair color and IQ are examples of Mendelian traits.

Answers

Answer:

Hair color and IQ are examples of Mendelian traits.

What is reactivity and what does is have to do it chemistry

Answers

Answer:

In chemistry, reactivity is a measure of how readily a substance undergoes a chemical reaction. The reaction can involve the substance on its own or with other atoms or compounds, generally accompanied by a release of energy. The most reactive elements and compounds may ignite spontaneously or explosively.

( hope this helps!)

Which feature is characteristic of rivers?​

Answers

Answer:

A. a weak or strong current

Explanation:

hope this helps

Answer:a weak or a strong current

Explanation:

Please help! Multiple choice question.

Answers

Answer: A is the correct answer

Hope this helps :)

In your own words, what does “degradation” mean?

Answers

Degradation means the wearing down of or slow lowering to a weaker position.

Answer: the condition or process of degrading or being degraded.

Explanation: Give me 5 stars

Categorize each carbohydrate listed as either a monosaccharide, disaccharide, or polysaccharide.
glucose

Answers

Answer: Glucose and Fructose are monosaccharides. Cellulose and starch are polysaccharides. And sucrose is a disaccharide.

The primary form of reproduction in bacteria is ____________ .Structures called ____________ assist bacteria with genetic exchange.Stressful environments cause many bacteria to produce ____________ to survive harmful conditions.Many bacteria exchange genetic material through a mating process called ____________ .A process known as ____________ involves viruses as a means of bacterial DNA exchange.

Answers

Answer:

1 binary fission

2) pili

3) Spores

4) Conjugation

5)Transduction

Explanation:

A red flower RR and a purple flower BR have 4 offspring how many will be red blue and purple? Complete a Punnett square

Answers

Answer:

So three of the offspring will be red, blue and purple and one will be purple.

hope that's correct and it helps

This question is in accordance with the mendel law of independent assortment which stated that two alleles assort independently during gamete formation. Therefore, the resultant punnett square will show flower having the genotype of RB and purple color as its phenotype.  See Attachment for punnet square results.

what is the oxygen cycle ?

Answers

Oxygen cycle is the cycle which maintains the level of oxygen in the atmosphere.Oxygen from the atmosphere is used up during combustion, respiration and in the formation of oxides of nitrogen.This oxygen is returned to the atmosphere by lithosphere.This forms the oxygen cycle in nature.

Hope you could get an idea from here.

Doubt clarification - use comment section.

people who don't believe humans are causing global warming argue it might be caused by...

Answers

Earths own loop cycle is some arguments I’ve heard.

Which cells can form ATP by breaking down glucose?

a
Prokaryotes only
b
Plants only
c
All cells
d
Animals only

Answers

Answer:

C.) All cells

Explanation:

because energy needs plants as well as animals including prokaryotic cell

What is chemosynthesis?
How do chemosynthetic organisms get energy? Some examples of organisms include colorless sulfur bacteria, iron bacteria, and giant tube worms (Riftia parchyptila).

Answers

the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

what is the main function of the cell wall in a plant cell

Answers

Answer: provides tensile strength and protection against mechanical and osmotic stress

Explanation:

The main function is so that it protects the cell and strengthens it

A _____ occurs when a cold air mass moves over a warm air mass.
front
hot front
warm front
cold front
ILL MARK YOU BRAINLIEST

Answers

Answer:

Cold front

Explanation:

-

Complete this sentence. Excess ____________ from human activities can cause harmful algal blooms (HABs), such as red tide, that produce toxic effects on aquatic species, marine mammals, and birds, as well as on the humans who eat them.

Nitrogen
Carbon
Salt
Heat

Answers

Answer:  Nitrogen

Explanation:

Harmful algal blooms can occur in lakes, reservoirs, rivers, ponds, bays and coastal waters, and the toxins they produce can be harmful to human health and aquatic life. Harmful algal blooms are mainly the result of a type of algae called cyanobacteria, also known as blue-green algae.

The answer is nitrogen, nitrogen helps algae grow and when it grows in excess it takes away the dissolved oxygen from the water which kills off fish, which puts more nitrogen in the water making algae grow even more until it snowballs and destroys the aforementioned ecosystem.

Which of the following statements about cells is NOT true

Answers

Answer:

umm there are no options?

Explanation:

Answer:

What is the answer choices

Explanation:

Which of these are causes of long-term climate change? Check all that apply.

Answers

Answer:

Where are the answers?

Explanation:

Answer: Earths orbit around the sun, solar energy, and volcanic eruptions

Explanation:

Earths orbit: At other times, the ellipse is more pronounced, so that the Earth moves closer and further away from the Sun in its orbit. When the Earth is closer to the Sun, our climate is warmer and this cycle also affects the length of the seasons.

Solar energy: Solar produces less life-cycle GHG emissions than conventional fossil fuel energy sources.

Volcanic eruptions: Volcanic eruptions of this magnitude can impact global climate, reducing the amount of solar radiation reaching the Earth's surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.

Where, in terms of an ellipse, is the Sun located with respect to the orbit of each planet? Which
one of Kepler's Laws does your answer support?

Answers

Answer:

focus

The Sun is at one focus. The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit. Kepler's Second Law: the imaginary line joining a planet and the Sun sweeps equal areas of space during equal time intervals as the planet orbits.

Plant cell vacuoles tend to store a great
deal of...
A. gases.
B. water.
C. protein.

Answers

Answer:

Water. Plant cells have a large central vacuole that tends to store a great deal of water

The answer is the second choice. “B”

in phantom limb syndrome, which sensory pathway is responsible for conveying the sensory neuron activities?

Answers

The experience of the phantom limb syndrome involves the subjective sensation of the patient, the processes involved in this sensation are: both sensitive activity and the motor pathway.

The somatic nervous system is made up of mixed nerves (mixtures of sensory and motor axons) that emerge from the central nervous system, innervate the somatic effectors (skeletal muscles).

Somatic motor pathways begin in the motor areas of the cerebral cortex, the projection neurons in that cortex emit axons that descend through the brain stem until they reach the spinal cord.

Patients with this syndrome experience the sensation that the amputated limb is still attached to their body, since the brain continues to receive messages from the nerves that originally carried the impulses from the lost limb.

Therefore, we can conclude that Phantom Limb Syndrome is the perception of sensations, which include pain of an amputated limb, where both sensory activity and the motor pathway have an action on said sensations.

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