Explanation:
Some Astronomers believe the life cycle of small stars begins in this order:
Planetary nebula phase: this phase is the result of the previous red giant phase (when the star turns red in color). However, at this stage, the star keeps expanding, glowing, and getting hotter as it strives to complete its life--cycle.White dwarf phase: As the name implies, the star now has a reduced size and a dense core than during the Nebula phase, while still glowing with surface temperatures of over 100,000°C.Neutron star: This stage occurs next after the White dwarf phase which may result in the final death of the star. Here the star is reduced to an extremely dense core.While the life cycle of big stars begins in the order:
Supernova phase: At this phase, the star collapses and produces other heavier elements.Neutron star phase or may formBlack Holes.
HELP ASAP!!
What factor most influences whether a resource is classified as renewable or
nonrenewable?
A. The consumption rate of the resource
B. The availability of the resource
C. The length of time the resource takes to form
D. Whether the resource is biotic or abiotic
Answer:
C
Explanation:
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What factor determines the pathway that pyruvic acid takes after leaving glycolysis?
Answer:
Explanation:
Answer Expert Verified. The presence of oxygen and levels of ATP.
what is the realignment of minerals are called?
Answer: the realignment of minerals is called METAMPORPHISM
in rocks
Explanation: hope this helps if u need more explanation comment in the comment section
HELP ASAP
Which of the following choices represents the approximate percentage of geologic time that humans have existed on Earth since its origin?
less than 1%
1.8%
11.8%
more than 25%
Answer:
less than 1%
Explanation:
The approximate percentage of the geologic time that humans have existed on the Earth since its origin is less than 1%.
The earth is about 4.6 billion years and much of its history has been without the present of human activities.
Hominis were the first human to appear on the surface of the earth. This was in the Miocene epoch which was about 6 million years ago. Compared to the age of the earth, this time lapse is very small and not up to 1%. Life first appeared on earth about 3.5billion years. Since then evolution has taken its due course to give what we have today.What are the next four numbers in the pattern below ? 3,9,7,13,11,17,15,
Answer:
21,19,25,23
Explanation:
You are adding 6 to get the next number, than subtract 2 from the the number
Why are proteins important to the survival of animals?
A.Proteins provide energy storage for cells.
B. Proteins provide genetic information to cells.
C. Proteins provide structural functions for the body.
D. Proteins provide the body with energy.
Answer:
C. proteins provide structural functions for the body.
Explanation:
Proteins play a key role in the healthy of animals such as building and repairing muscles and other body tissues of the animal, it is needed to form new skin cells, grow hair, build muscle tissue etc.
almost all energy comes from?
Answer: the sun
Explanation:
How does carbon not get lost when it moves through the carbon cycle
Answer:
Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth’s temperature, make up the food that sustains us, and provide energy that fuels our global economy. Carbon moves from one storage reservoir to another through a variety of mechanisms. For example, in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis. They use energy from the sun to chemically combine carbon dioxide with hydrogen and oxygen from water to create sugar molecules. Animals that eat plants digest the sugar molecules to get energy for their bodies. Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle. The ocean plays a critical role in carbon storage, as it holds about 50 times more carbon than the atmosphere. Two-way carbon exchange can occur quickly between the ocean’s surface waters and the atmosphere, but carbon may be stored for centuries at the deepest ocean depths. Rocks like limestone and fossil fuels like coal and oil are storage reservoirs that contain carbon from plants and animals that lived millions of years ago. When these organisms died, slow geologic processes trapped their carbon and transformed it into these natural resources. Processes such as erosion release this carbon back into the atmosphere very slowly, while volcanic activity can release it very quickly. Burning fossil fuels in cars or power plants is another way this carbon can be released into the atmospheric reservoir quickly.Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. As a result, the amount of carbon dioxide in the atmosphere is rapidly rising; it is already considerably greater than at any time in the last 800,000 years. The ocean absorbs much of the carbon dioxide that is released from burning fossil fuels. This extra carbon dioxide is lowering the ocean’s pH, through a process called ocean acidification. Ocean acidification interferes with the ability of marine organisms (including corals, Dungeness crabs, and snails) to build their shells and skeletons.
Which rock forms by the recrystallization of unmelted rock material under conditions of high temperature and pressure? A. graniteB. gneiss C. rock gypsum D. bituminous coal
Gneiss forms by the recrystallization of unmelted rock material under conditions of high temperature and pressure.
Metamorphic rocks form as a result of recrystallization of unmelted material under conditions of high temperature and pressure over a very long period of time.
Metamorphic rocks can also be formed from the transformation of existing rock to new rock.
Examples of metamorphic rocks include schist, gneiss, quartzite and marble.
Find out more at: https://brainly.com/question/1366827
What is the melting point of a substance
depending on what it is for water it is 32°F
steel is 2500°F
aluminum 1,221°F
zinc is 787.2°F
sorry i cant put all the melting points
unless u mean
Melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change.
IN WHAT SITUATIONS WOULD YOU WANT TO CONSUME FAT INSTEAD OF CARBOHYDRATES FOR ENERGY PURPOSES?
I have asked this 2 times and I keep getting people saying stuff that is not good and someone just said points so please will someone help me? this is my last time asking I really need help.
Answer:
if you're going to be doing something in the cold for an extended period of time, it would be better to eat more fat in order to keep you warm and energized.
Electrons that provide the energy for the production of most of a cell's ATP are carried to the electron transport cham by molecules.
Answer:
The answer was not found :(
Explanation:
Merry Christmas and Happy Holidays!
Answer: The electron transport chain takes place in the mitochondria. This stage converts the NADH into ATP. The electron transport chain works as a proton pump: it pumps hydrogen ions (protons) through the membrane, and only allows them back through a protein (ATP synthase) which makes ATP.
Hope this helps......... Stay safe and have a Merry Christmas!!!!!!!
I just want to say something... My account got deleted yesterday and i'm very upset because i had over 600 friends, 7,00 points, and 38 brainiest answer... I would love it if i got at least 15-20 friends by Christmas.
what is an enzyme i will mark brainiest
Answer:
a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
Answer:
Enzymes are proteins that act as biological catalysts. Catalysts accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products.
Explanation:
Hope this helps, Brain-List?
Main idea or the topic of finding the epicenter of an earthquake.
Answer:
Main Concept Seismology is the study of earthquakes, their effects, and seismic waves.
Explanation:
The earthquake epicenter is a point on the Earth's surface directly above an earthquake. Scientists determine the epicenter by studying the P waves and S waves produced by all earthquakes. P waves are compression waves and travel faster through the Earth than S waves.
please help asap i have a time limit and if you give a correct answer i’ll give that brain thing tysm
Answer:
b.synthetic;oil
Explanation:
oil makes plastic
Requires the use of energy to molecules.
Diffusion
Osmosis
Active transport
Do you think tress could reduce the negative effects of climate change? why or why not
Answer:
Hi there, Here is what I think
Trees can't reduce the negative effects of climate change because climate change throws off their functions (ex. Trees' leaves fall during the fall season but if its a lot warmer close to summer weather during fall season) it can mess up the way they function at a certain point in the seasons with that trees won't be able to function properly if the weather changes all of a sudden from scorching hot summer to a blizzard all of a sudden which can kill trees. Trees can hibernate in the Winter and bloom around Spring/Summer time but if you have wintery weather during summer it will kill them. So no trees can't reduce the negative effects of climate changes hence why people are scared over climate change because if the trees die we can die too without the oxygen trees and other plants provide for us.
Hope this helped :)
Please hurry! Will vote brainliest!!
Leonardo is explaining the ecological pyramids to his daughter. He tells her that often scientists do not favor pyramid of biomass. Why would he say that?
A. because the available biomass may be less than the actual energy provided
B. because calculating biomass involves counting of the organisms, which can be erroneous
C. because obtaining biomass requires advanced technology
D. because biomass shows that the energy remains constant across all trophic levels
La respuesta es la D
Answer:
D. because biomass shows that the energy remains constant across all trophic levels
What is the product of light dependent reaction? *
A.Sugars
B.Light
C.Oxygen
D.Carbon Dioxide
HELP ASAP PLEASE!! DUE IN 10 MINUTES !!! based on these results which statement correctly predicts what will happen to red blood cells when they are placed in a beaker containing a water solution in which the salt concentration is much higher than the salt concentration in the red blood cells
A:the red blood cells will absorb water and increase in size
B:the red blood cells will lose water and decrease in size
C:red blood cells will of first absorb water than lose water and maintain their normal size
D:the red blood cells will first lose water then absorb water and finally double in size
Answer:
The correct answer is - option B. the red blood cells will lose water and decrease in size.
Explanation:
The movement of the water takes place always from the high concentration region of solute to the low concentration of solute through a semi-permeable membrane. In this case, the representation is showing that placing the cell inside a solution with low concentration solute than the cell makes the cell increase the size, and placing it in a solution high concentration of solute makes it decrease in size due to the transfer of water from more water to the low water area.
Now placing the RBC in a solution with more salt concentration than the cell makes the solution hypertonic which means the solution has more solute concentration and less water so the water move from cell to the solution and cell will shrink and decrease in size.
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Answer:
The carpal region is distal to the brachial region.
Explanation:
What kind of tools did Neanderthals use in their daily lives?
Answer:
they made bone tipped wooden spears Nd hafted cutting or scraping tools and they made various things for adhesive.
A lesion in the
is likely to affect thinking, planning, and overall personality,
as this brain region plays a significant role in cognition.
A) reticular activating syštem
B) prefrontal cortex
C) olfactory bulb
D) premotor cortex
What does the process of natural selection involve?What does the process of natural selection involve?
A.
preservation of disadvantageous genetic mutations
B.
preservation of advantageous genetic mutations
C.
preservation of all species
D.
preservation of all members of a species
Answer:
B. preservation of advantageous genetic mutations
Explanation:
The process of natural selection involves the preservation of advantageous genetic mutation in a given population.
Natural selection is one of the key factors that ensures the evolution of organisms.
Desired traits that are able to survive adverse conditions like disease, food shortage, natural disasters are favored by the process of natural selection. Traits that also undergo advantageous genetic mutation in order to get a competitive advantage is also accrued to natural selection.Help please I will give Brainly
Answer:
(C)the option is already correct
A kitten might have genes for poor vision, but it could learn to...
Answer:
improve its eye power
Explanation:
I really dont know, but I think its correct
Feedback interactions in the human body are important
Answer: wdym uh they keep the internal body environment within its normal range.
Explanation:
Guard cells regulate which characteristic of life?
A
Every living organism is made of cells.
B
All living things are composed of DNA.
C
All living things grow.
D
All living organisms strive for balance through homeostasis.
Answer:
a
Explanation:
it helps celluar function
A researcher has used in vitro mutagenesis to mutate a cloned gene and then has reinserted the mutated gene into a cell. To have the mutated sequence disable the function of the gene, what must then occur
Answer:
recombination resulting in replacement of the wild type with the mutated gene
Explanation:
Recombination is a process of the formation of new alleles when the original ones are broken down into bits and then ‘recombined’.
When mutation of a cloned gene occurs and the mutated gene is reinserted into a cell, the mutated sequence gene function will have to be disabled which involves recombination resulting in replacement of the wild type with the mutated gene.
Yeasts are unicellular microorganisms of the fungi kingdom that can digest sugars using both aerobic and anaerobic cellular respiration. In the below experiment, what by-product of this reaction causes the balloons to expand?
Answer:
This question is incomplete as it does not contain the representation of the experiment, however, based on general understanding, the answer is:
Carbon dioxide (CO2)
Explanation:
Yeasts, as stated in this question, are living unicellular organisms that belong to the KINGDOM FUNGI. They employ both the aerobic (with oxygen) and anaerobic respiration (without oxygen) in breaking down sugars. However, both methods of cellular respiration gives off CARBON DIOXIDE (CO2) as a byproduct.
Therefore, when a yeast is placed in a balloon in accordance to this experiment and is allowed to perform respiration either aerobically or anaerobically, it gives off CO2 gas, which causes the balloon to expand.