Convection currents are powered by:
A. Heat
B. Motion
C. Pressure
D. Density
If you’re gonna guess, do not bother commenting

7th grade Science *Earth

Answers

Answer 1
the answer is a. heat

Related Questions

What is the large caldera that many scientists in
the United States keep an eye on just in case (it
hasn't erupted in 65,000 years)?
A. Mount McKinley
B. Death Valley
C. Yosemite National Park
D. Yellowstone National Park

Answers

Answer:

D.

Explanation:

Yellowstone National Park

Answer:

B

Explanation:

how does a zygote from​

Answers

Answer:

Formed when a male gamete (sperm) and a female gamete (egg) combine.

Explanation:

A zygote is formed when these two gametes come together. This initial phase is carried out in the Zygotic stage.

Hope this is correct. Have a wonderful day.

Why are invasive species dangerous to the environment?
A)They pollute the environment.
B)They are always predators.
C)They threaten biodiversity.
D)They bring abiotic factors.

Answers

Answer:

C

Explanation:

They threaten the other animals. They can take their food, homes, and they don't have natural predators.

Invasive species are dangerous to the environment as they threaten the biodiversity. Thus, the correct option is C.

Invasive species are those imported species that are able to thrive rapidly in another foreign area by adapting and reproducing quickly.

Invasive species of plants and animals lead to an increase in the competition for survival, which results in decrease in the population of the native species.

The invasive species also affect the food web that is existing in the particular ecosystem, because of which other all organisms which are part of the food web are affected. They outcompete the native species for food,

Thus, biodiversity is threatened due to the invasive species.

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How does carbon from corn end up in human hair?​

Answers

So if we eat a particular kind of food, and it has a particular kind of carbon in it, that's recorded in us, in our tissues, in our hair, in our fingernails, in the muscles

Basically what she or he said. I don’t like assuming genders.

match terms w definitions ​

Answers

Answer:

Bipolar or Polarity : B

Surface Tension: F

Capillary: C

Ion: A

Dissolving: D

Specific Heat: E

Answer:

1. Bipolar or Polarity  b

2. Surface tension     f

3. Capillary action     c

4. Ion                          a

5. Dissolving             d

6. Specific heat         e    

Summer or winter?
Why?
( I personally perfer winter because I just like the cold and clothes)​

Answers

Answer:

winter

Explanation:

because i like to sit by a warm fire and watch cheesy christmas movies. plus the weather is better

lol pls help i really need help

Answers

c would be missing. because when secondary succession occurs, it was previously occupied and re-colonized. im almost positive because i kind of remember doing this a few weeks ago. hope this helps a bit!

Morphological distinction is one of the steps necessary for speciation to occur.
What are the other two?

Answers

Answer:

Genetic Separation / Geographic isolation

Explanation:

Morphological distinction (or phenotypic differentiation) can be defined as the diversification of a set of observable physical characteristics in a population, capable of differentiating certain species.

The genetic separation occurs when the division of a group of genes into two or more pools of genes separated over time and depending on several other situational factors.

Geographic isolation occurs due to the physical separation of subpopulations of a given species. The barriers that isolate these subpopulations can be, for example, a river that cuts through a plain, a valley that divides plateaus or a portion of the sea that separates islands and continents.

Which of the following statements are characteristics of a compound?
1. Compounds are made from two or more elements,
II. A compound is a pure substance.
III. Compounds are represented by a chemical symbol.
IV. Compounds are represented by a chemical formula.

Answers

1 is the answer to your question.

does the moon have phases that change on a monthly basis

Answers

Yes it does it has phases every month

How do photoautotrophs make energy?
O They convert carbon dioxide, water, and inorganic compounds into carbohydrates.
O They convert carbon dioxide, water, and organic molecules to carbohydrates.
O They convert carbon dioxide, sunlight, and organic molecules to carbohydrates.
O They covert carbon dioxide, water, and sunlight into carbohydrates.

Answers

Answer:

c

Explanation:

what are the 3 negative effects of global warming/climate change ?

Answers

Answer: Effects on weather. Global warming leads to an increase in extreme weather events such as heat waves, droughts, cyclones, blizzards and rainstorms. Such events will continue to occur more often and with greater intensity.

Explanation: nothing to see at this point ;)

Answer:

The ice is melting specially at the earth's pole. This includes moungain glaciers . Much of this melting ice contributes to increse sea-levels.Hlonal sea levels are rasing 0.13 inches a year.Rasing temperature is also an effect oc vloba warming . This causes to the wildlife.

Wilting
Stimulus = _______________ Response = ____________________________________________

A not enough water or overwatered, plant stem and leaves are flaccid or droopy
B excessive watering, plant cell vacuole shrinks
C too much sunlight, roots grow downwards
D too much light, plant leaves turn brown

Answers

B-excessive watering,plant cell vacuole shrinks or D-too much light,plant leaves turn brown
gotta be one cause the effect on wilting plant is loss of rigidity of non-woody parts of plants

The different forms of a characteristic

Answers

Hybrid — offspring formed by parents having different forms of a specific trait. Law of independent assortment — Mendelian principal stating that genes for different traits are inherited independently of each other. ... Phenotype — outward appearance of an organism, regardless of its genes.

what is meant by ecosystem diversity?

Answers

Answer:

Ecosystem diversity deals with the verity in ecosystems within a location and its overall impact on human existence and the environment.

Explanation:

An example of ecological diversity on a global scale would be in different verity ecosystems, such as deserts, forests, grasslands, wetlands and oceans. Hope this helped and have an awesome day! :)

Neurons are cells of the nervous system. As part of its normal function, a
neuron pumps sodium ions (Na + ) out of the cell and potassium ions (K + ) into the cell. Which statement describes the role of energy in this process?

a. The process releases energy that is used to make ATP.

b. The process releases energy in the form of heat.

c. The process requires energy that is provided by the sodium and potassium ions.

d. The process requires energy that is provided by ATP.

Thank you! :)

Answers

Answer:

D. The process requires energy that is provided by ATP.

Explanation:

Neurons use a pump called the sodium-potassium pump, which normally pumps sodium ions out of the cell and pumps potassium ions into the cell.

This pump goes against the concentration gradient to create the resting membrane potential.

Since the pump goes against the concentration gradient, it requires energy, because it is not passive diffusion.

So, D is the correct answer, as the process requires ATP energy.

Neurons are cells of the nervous system. As part of its normal function, a

neuron pumps sodium ions (Na + ) out of the cell and potassium ions (K + ) into the cell. The process requires energy that is provided by ATP. The correct answer is option D.

What is the role of sodium potassium pump ?

The role of the sodium potassium pump is the muscle contraction and the nerve impulse. In exchange of 2 potassium ions is the displacement of 3 sodium ion and this exchange is against the concentration gradient thus requires the molecule of ATP for the transfer of the ions.

The Na+/K+-pump an active transporter  uses ATP hydrolysis  in  energy source to move ions across the neuronal membrane down their concentration gradients and  assigned specific functions associated with the generation of the action potential as well as with the maintenance of other active transport.

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Which of the following BEST explains how scientists are able to determine the
structure of Earth's interior?
1) Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface.
2)Drilling deep within the Earth.
3)By cutting into other terrestrial planets.
4) Our modern knowledge of the Earth's interior is just a guess that many scientists have accepted.

Answers

Answer:

I think number 1 is the answer.

Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface. The correct option is 1.

What are seismic waves?

Seismic waves are caused by sudden movement of materials within the Earth, such as fault slip during an earthquake.

Seismic waves generated by earthquakes or explosions can travel through the Earth's interior, revealing information about the properties of the rocks and other materials they pass through.

In addition to seismic data, scientists use other indirect methods such as magnetic and gravitational field studies, as well as analyses of rocks and minerals found at or near the surface.

Scientists collect indirect evidence by observing seismic waves (Earthquakes) as well as what is visible on the Earth's surface.

Thus, the correct option is 1.

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In humans type A blood is caused by the antigen A in the red cells resulting from gene A. Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood. If a person of blood group AB marries one belonging to blood group O what will be the blood groups of their children? Show the Punnett square for this cross.

Answers

Answer:

Type A and type B

Explanation:

This question is describing blood type in humans. According to the question, type A blood is caused by the antigen A of gene A while Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood.

If a person of blood group AB i.e. genotype (iAiB) marries one belonging to blood group O (genotype ii), the following genotypes of offsprings will be produced (see attached image for punnet square):

iAi - blood type A

IBi - blood type B

What features of cells is best demonstration in the image

Answers

Answer:

I think its D

Explanation:

The amusement park will be located in a hot climate. The engineers want to select a material for the giant slide that will prevent the surface from getting too hot. Based on the specific heat values, what material would be the best choice? A.Plastic, because it takes more energy to raise its temperature B.Iron, because it takes more energy to raise its temperature C.Plastic, because it takes less energy to raise its temperature D.Iron, because it less energy to raise its temperature

Answers

Answer:

A

Explanation:

The correct answer would be plastic because it takes more energy to raise its temperature.

The specific heat capacity of a substance is the amount of heat required to raise the temperature of the substance by one degree. The more the specific heat capacity of a substance, the more the heat required to raise its temperature.

The specific heat capacity of plastics is generally more than that of metals. Hence, metals will get heated faster than plastics under the same condition. More energy would be needed to raise the temperature of plastics when compared to metals.

the correct option is A.

Name two possible causes of the largest mass extinction in Earth’s history and explain how this both helped and hurt different species.

Answers

Answer:

Explanation:

Two possible causes for the biggest mass extinction event in the history of our planet would be an asteroid impacting the planet and the massive volcanic activity. This mass extinction event is called the Permian-Triassic extinction. This helped many species emerge as survivors and thrive without the oppressive bigger species that died out. It hurt many species that were unable to survive the harsh conditions that resulted from everything that was happening to their habitats and food sources.

What is a volcano?
A. a tall mountain
B. a chemical reaction that produces fire
C. an atmospheric condition
D. an opening in Earth’s crust

Answers

Answer:

c

Explanation:

Answer:

D

Explanation:

I hope this is correct and have a great day

PLEASE I WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST

WORTH 30 POINTS

Answers

Answer:

the second one is 1, the first one is 3, the last one is 5, the fourth one is 2 and the third one is 4

Explain how mitosis
maintains the chromosome number of the
original cells when forming new cells.

Answers

duplicating the dna

Mitosis is a type of cell division that helps to maintain the chromosome number of the original cells by dividing cells that previously duplicate their genetic material (DNA) during the interphase (S phase).

The cell cycle is divided into the interphase and the mitotic (M) phase.

The interphase of the cell cycle is in turn divided into three different phases: Growth 1 (G1) phase, Synthesis (S) phase and Growth 2 (G2) phase.

During the S phase, the chromosomes (i.e., the genetic material) of a cell are duplicated.

Mitosis is a type of cell division that follows the interphase of the cell cycle by which a somatic (body) cell divides to produce two genetically identical daughter cells.

In conclusion, Mitosis is a type of cell division that helps to maintain the chromosome number of the original cells by dividing cells that previously duplicate their genetic material (DNA) during the interphase (S phase).

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GUYSSS HELPP, ILL MARK YOU BRAINLYYY

Answers

Explanation:

1 light energy

2 chemical energy

3 chemical energy

4 light energy

Answer:

1, Light energy

2, Chemical energy

3, Chemical energy

4, Light energy

Heyy Guyss Helpt Ill Markt You Brainliestt

Answers

Answer:

1. Photosynthesis transforms light energy into chemical energy

2. chlorophyll captures light energy

3. photosynthesis creates energy from carbon dioxide and water.

Explanation:

Therefore, first 3 statements are true.

I hope it helps.



When do mountains get built?

Answers

Answer:

Movements of tectonic plates create volcanoes along the plate boundaries, which erupt and form mountains. A volcanic arc system is a series of volcanoes that form near a subduction zone where the crust of a sinking oceanic plate melts and drags water down with the subducting crust.

Explanation:

I hope this helps

Explanation:

movement of tectonic plates create volcanoes along the plate boundaries which erupt and form mountains

a volcanic Arc system in a series of volcanoes that form near a subduction zone where the crust of a sinking oceanic plate melts and drags water down with the subducting crust

hope this helps

A large canyon, with a large river running through the bottom, was MOST LIKELY formed by​

Answers

Answer:

the movements of rivers, tectonic activity, and erosion.

PLEASE HELP EHHHHHH );

Answers

Answer:

1

Explanation:

Answer:

The answers are 1 and 3.

Explanation:

Viruses are tiny particles, smaller than prokaryotic cells. Viruses are not cells and cannot replicate without help, but they have nucleic acids and can evolve.

Hope that helps and please give me brianliest!!

Answer and will give brainliest and 10 points

Answers

Answer: I don't know if this is right but I think it is

b. at the organ level

Explanation:

Other Questions
Explain what sort of information should be included on a medical emergency card. The average teenager spends 2.9 hours a day watching television. How much time do they spend each week watching television? Lines 16-30 below complete the story of Bertie and Aunt Agatha. Read the conclusion of the excerpt and answer the question.from "EXTRICATING YOUNG GUSSIE"by P.G. WodehouseShe sprang it on me before breakfast. There in seven words you have a complete character sketch of my Aunt Agatha. I could go on indefinitely about brutality and lack of consideration. I merely say that she routed me out of bed to listen to her painful story somewhere in the small hours. It can't have been half past eleven when Jeeves, my man, woke me out of the dreamless and broke the news: 'Mrs Gregson to see you, sir.'I thought she must be walking in her sleep, but I crawled out of bed and got into a dressing-gown. I knew Aunt Agatha well enough to know that, if she had come to see me, she was going to see me. That's the sort of woman she is.She was sitting bolt upright in a chair, staring into space. When I came in she looked at me in that darn critical way that always makes me feel as if I had gelatin where my spine ought to be. Aunt Agatha is one of those strong-minded women. I should think Queen Elizabeth must have been something like her. She bosses her husband, Spencer Gregson, a battered little chappie on the Stock Exchange. She bosses my cousin, Gussie Mannering-Phipps. She bosses her sister-in-law, Gussie's mother. And, worst of all, she bosses me. She has an eye like a man-eating fish, and she has got moral suasion down to a fine point.I dare say there are fellows in the worldmen of blood and iron, don't you know, and all that sort of thingwhom she couldn't intimidate; but if you're a chappie like me, fond of a quiet life, you simply curl into a ball when you see her coming, and hope for the best. My experience is that when Aunt Agatha wants you to do a thing you do it, or else you find yourself wondering why those fellows in the olden days made such a fuss when they had trouble with the Spanish Inquisition.'Halloa, Aunt Agatha!' I said'Bertie,' she said, 'you look a sight. You look perfectly dissipated.'I was feeling like a badly wrapped brown-paper parcel. I'm never at my best in the early morning. I said so.'Early morning! I had breakfast three hours ago, and have been walking in the park ever since, trying to compose my thoughts.'If I ever breakfasted at half past eight I should walk on the Embankment, trying to end it all in a watery grave.'I am extremely worried, Bertie. That is why I have come to you.'And then I saw she was going to start something, and I bleated weakly to Jeeves to bring me tea. But she had begun before I could get it.'What are your immediate plans, Bertie?''Well, I rather thought of tottering out for a bite of lunch later on, and then possibly staggering round to the club, and after that, if I felt strong enough, I might trickle off to Walton Heath for a round of golf.''I am not interested in your totterings and tricklings. I mean, have you any important engagements in the next week or so?'I scented danger.'Rather,' I said. 'Heaps! Millions! Booked solid!''What are they?''Ierwell, I don't quite know.''I thought as much. You have no engagements. Very well, then, I want you to start immediately for America.''America!'Do not lose sight of the fact that all this was taking place on an empty stomach, shortly after the rising of the lark.'Yes, America. I suppose even you have heard of America?''But why America?''Because that is where your Cousin Gussie is. He is in New York, and I can't get at him.''What's Gussie been doing?'Gussie is making a perfect idiot of himself.'To one who knew young Gussie as well as I did, the words opened up a wide field for speculation.'In what way?''He has lost his head over a creature.'On past performances this rang true.Which sentence best summarizes the central idea of this story? Bertie strongly dislikes his Aunt Agatha because she treats him poorly. Aunt Agatha wishes Bertie to do something that he does not want to do. Gussie has fled to America to escape from the expectations of Bertie and Aunt Agatha. Jeeves resents being asked to perform chores for Bertie and his Aunt Agatha. When passing the soccer ball, what part of the foot do you use? *O Top/LacesO HeelO ToesO Inner side how do the american avocet protect it egg when a predator is near Median of 40,2,31,15,29,16 and X is 21. then X= ? 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