Answer:
Water molecules are polar.
Explanation:
Hydrogen Bonds - Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.
This bond is very weak. Hydrogen bonds are formed easily when two water molecules come close together, but are easily broken when the water molecules move apart again. They are only a small fraction of the strength of a covalent bond, but, there are a lot of them
The fact that water molecules are POLAR makes it possible for hydrogen bonds to form between them.
HOW IS WATER POLAR?
Water is a chemical compound made up of two hydrogen atoms and one oxygen atom i.e. H2O. The hydrogen atoms are electropositive while the oxygen atom is electronegative. The electronegativity of the oxygen atom allows the positive hydrogen ions to be attracted towards it. This makes water molecules polar. Hydrogen bonds form when hydrogen ions (H+) are attracted to an electronegative ion like 02-, S2- etc. Hence, in the interaction of water molecules, the hydrogen ion of one water molecule gets attracted to the oxygen ion of another water molecule, hence, forming HYDROGEN BOND.In a nutshell, hydrogen bonding is possible in water due to its polariry.
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When did people begin to notice that coastlines of continents fit together like puzzle pieces?
when satellites began taking pictures of Earth from space
when Alfred Wegener proposed the idea of continental drift
when early explorers traveled from Europe and Asia to the Americas
when geologists first started examining the fossil record of South America
Answer:
The 1500s
Explanation:
the1500s
As early as the1500s map makers were beginning to notice that the individual continents fit together like pieces of a jigsaw puzzle. It wasn't until 1912 that Alfred Wegener first proposed an acceptable hypothesis (continental drift) as an explanation
Without external forces, the third generation of a bacterium and the original parent cell will have approximately ________ matching DNA sequences.(1 point)
33%
12.5%
100%
25%
Answer:
33%
Explanation:
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Which statements describe a human-created mass extinction? Select three correct choices.
It results from the disappearance of entire species in a short time.
It results from the disappearance of a few organisms in a short time.
It is caused by the growth of the human population.
It is a type of long-term change.
It is a type of short-term change.
It is caused by a decrease in the introduction of nonnative species.
Answer:
A,C,D
Explanation:
Answer:
A,C,D
Explanation:)hope this helps have a great day!
Braniliest would be appreciated
I DONT UNDERSTAND GENOTYPES AND PHENOTYPES HELP
If a cell was to have it's plasma membrane freeze, why would the cell die?
Pls help due soon: Why is a low-pressure system generally associated with cloudy and rainy weather?
What happened as the mass of the sun increased during the formation of the solar system?
Answer:
The Sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust called a solar nebula about 4.5 billion years ago. Most of the material was pulled toward the center to form our Sun, which accounts for 99.8% of the mass of the entire solar system.
Explanation:
Hope this helps!! i am trying to be brainliest
The increase in gravitational pull, which caused the surrounding gas and dust to be pulled towards the center of the developing solar system.
What is the Solar system?As the mass of the sun increased during the formation of the solar system, several important changes occurred. One of the most significant changes was the increase in gravitational pull, which caused the surrounding gas and dust to be pulled towards the center of the developing solar system. As a result, the temperature and pressure at the center increased, eventually reaching a point where nuclear fusion began and the sun became a star.
The increase in mass also had an impact on the orbits of the planets. As the gravitational force of the sun increased, it caused the orbits of the planets to become more stable and circular, rather than elliptical or irregular. This stability allowed the planets to maintain their orbits over billions of years, contributing to the long-term stability of the solar system.
In addition, the increase in mass allowed the sun to retain more of the lighter elements, such as hydrogen and helium, which were abundant in the early solar system. This abundance of lighter elements contributed to the formation of the gas giant planets, such as Jupiter and Saturn, which have massive hydrogen and helium atmospheres.
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Galileo Galilei discovered that Earth moved around the sun, which was the opposite of what most people believed at the time. What was the response of society's leaders to Galileo's discovery? He was celebrated by society and became a wealthy man. His discovery was ignored by society's leaders. His books were banned and he lived under house arrest. He was asked to change his theory and publish it again.
Answer:
His books were banned and he lived under house arrest.
Explanation:
Answer:
His discovery was ignored by society's leaders. His books were banned and he lived under house arrest. He was asked to change his theory and publish it again. Brainliest please.
Explanation:
Osmosis is the movement of water from a high concentration to a low concentration.
True or False
Answer:
yes, it's absolutely true statement
A paramecium is a unicellular organism that lives in pond water. It has a cell structure known as a contractile vacuole that uses energy to pump out water so that the paramecium does not burst. What does this demonstrate?
A.) osmosis
B.) diffusion
C.) homeostasis
D.) cellular respiration
Someone pleas help :(
Giving BRANLIEST!!!
Answer: c
Explanation:
They are different organisms.
Answer:
c
Explanation:
i think
Plants could not live if they were unable to get water and nutrients from soil. In some places, especially deserts, these resource are in short supply so plants must compete with each other for them. Which of the following is an actual strategy used by plants to keep competitors from being a problem?
A) Having very spiky parts above ground
B) Releasing ‘plant poisons’ (herbicides) from their roots into the soil
Answer:
A is your answer.
Explanation:
Hope this helps!
Please mark me brainliest!!!
Pls help due soon: Why is the moisture of cirrus clouds mostly in the solid state?
The moisture of cirrus clouds mostly in the solid state as the higher altitude allows for lower temperatures, leading to frozen water crystals. The correct option is A.
What are cirrus clouds?These clouds indicate that the weather is favorable. They are distinguished by their high altitudes, which reflect the direction of the wind, which moves them and constantly changes their shapes.
The higher they are, the lower the temperatures; son water vapor condenses into crystals, which are blown in different directions by the wind.
Cloud formation occurs when humid air ascends and experiences adiabatic cooling due to the high temperature.
Because the density and pressure of the air decrease as altitude increases, the air tends to expand with elevation in response to the reduced pressure.
Gases in expansion experience adiabatic cooling, losing caloric energy as their molecules move further apart. As the air rises, it becomes colder and thus denser.
Thus, the correct option is A.
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Do particles in a solid have thermal energy?
Answer:
Yes, but a very low amount because they can only vibrate in place.
Explanation:
HELP PLEASE ASAP!!!! I don't understand this
Answer: D
Explanation: you got the one you click on right so no changes needed.
Which of the following statements is true?
A.)All plants can make their own food.
B.)Photosynthesis only happens in plant leaves.
C.)Photosynthesis needs light energy to happen.
D.)All of the above.
Answer:
D.
Explanation:
Plz Plz help me with this its due today so plz help out!!!
Answer:
1.lysosome
2.cell membrane
3.ribosome
4.nucleus
5.golgi body
6.vacuole
7.mitochondrion
8.endoplasmic reticulum
Answer: Use this as a reference sheet for all of your biology assignments!
Explanation:
Unequal heating of the earth by the sun and the earth's rotation cause what?
Group of answer choices
A all answers are correct
B wind belts
C tropical easterlies
D polar easterlies
Answer:
A) all answers are correct
Explanation:
Wind belts, tropical easterlies , and polar easterlies are all examples of unequal heating of the earth by the sun and the earth's rotation, because they distribute heat or cold unevenly based on the sun heat and the earth's rotation.
It will be A I think
How many Oxygen atoms are present in this chemical equation: Na2O3?
Answer:
3
Explanation:
You can see how many atoms there are next to the element (O3)
How does the chain go
Answer:
1. Mosquito larvae is eaten by minnows
2. Minnows eat some algae and mosquito larvae
3. Trout eat algae and minnows
4. Herons eat the trout
So, these are the animals in order.
1. Mosquito larvae
2. Minnows
3. Algae
4. Trout
5. Heron
Hope this helps you!
. What provides most of the water for the water cycle?
This is the text PLEASE HAS TO BE TURNED IN IN 5 MIN
Answer:
The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Ice and snow can sublimate directly into water vapor.
Explanation:
The table below shows the categories of four hurricanes at various locations across Florida.
Florida Hurricanes
Location Category
Florida Keys 5
Florida Panhandle 1
Cedar Keys 2
South Florida 4
Which location most likely suffered the greatest damage?
Cedar Keys
Florida Keys
Florida Panhandle
South Florida
Answer:
the Florida Keys
Explanation:
The answer is Florida keys because it has the highest category. If a hurricane has a high category (categories are rated from 1-5) a higher amount of damage is expected.
Answer:
florida keys cause 5 is bigger than 4 2 and 1
Explanation:
Plz help i will give brainliest. Thank you to however helps and its 30 points
help I don't understand
Answer:
srry i dont understand it to but
i know you can do it
Answer:
Measure all of the grass heights. Then add them all togehter and divide by how many there are (in this case 10) Then the number you get should be your answer.
Rock layers labeled A to J from bottom to top. Layers A, B, and C are not horizontal, and are pushed up toward layer E. Layers E, F, I, and J are horizontal. A fault is labeled G, and runs from layer A to the bottom of layer I. Rock layers to the right of the fault are shifted up and do not include layer F. Layer H is Y-shaped, starting below layer A up to layer E, on the right side of the fault. Arrows point to unconformities at the bottom of layer E on both sides of the fault, and the top of layer E on the right side of the fault. Use the drop-down menus to answer the questions about the diagram. Letter H is a(n) . Which of these is youngest? Which of these was eroded? Which happened first?
Answer:
1,3,2,3
Explanation:
Answer:
Letter H is a(n) intrusion.
Which of these is youngest? Letter G
Which of these was eroded? Letter C
Which happened first? Letter F was deposited.
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I just did the review for it and these are the answers. The person above is correct, but if you want what the answer is in wording and not numbers, then this answer would be suited for you.
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Have a great day and God bless! :)
i have posted this 3 times can some one plz help?
How many Oxygen atoms are present in this chemical equation: 2CO2
Answer:
There are Four Oxygen atoms
Explanation:
Both species benefit in the type of symbiosis called parasitism. Please select the best answer from the choices provided T F
The statement “both species benefit in the type of symbiosis called parasitism” is false.
Parasitism is a type of symbiosis where one organism is harmed while the other benefits.
An example of parasitism is a dog infested with ticks.
The ticks benefit from drinking the dog’s blood, harming the dog in the process.
What is NOT a way the body maintains homeostasis?
a
Developing a fever to kill off an infection.
b
Sweating to cool the body's temperature
c
Shivering to warm up the body
d
Eardrum vibrating to hear sound