Which substance is a compound?
water
gold
oxygen
hydrogen

Answers

Answer 1

Answer:

Water is a compound because it is made of two elements: Hydrogen and Oxygen. But water is totally different from Oxygen and Nitrogen.

Explanation:

Answer 2

Answer:

water

Explanation:

water is a combination of one oxygen atom and two hydrogen atoms.


Related Questions

Which of the below is required to transport large amounts of substances into and within the cell? This is a multis-select question.

A- Protein pump
B- Concentration gradient
C- ATP
D-Vesico

Answers

Answer:

it is protein pump

Explanation:

it is made of cellulose and its component is water loving or what we call hydrophilic thus it can transport large amount of substance into and within the cell

Answer: a-PROTEIN PUMP

Explanation:

Protein pump. – a kind of protein that is capable of pumping out compounds that could pose a threat to the cell. An example is AcrB, a bacterial protein complex that repels a wide range of antibiotics through its ability to capture and pump out a spectrum of structurally diverse compounds.

1
When placed in water, oil does not dissolve and stays separate. This means oil is_____ and ____.

Answers

Answer:

when placed in water, oil does not dissolve and stays separate. this means oil is immiscible and inorganic

Explanation:

When placed in water, oil does not dissolve and stays separate. This means oil is a non-polar and hydrophobic substance.

What are oils?

Oils are organic compounds. They are nonpolar chemical substances that are made up of hydrocarbons. They're flammable, and they're extracted from vegetables plants, and animals.

Oils are not soluble in water because they are hydrophobic in nature, doubt a layer of oils is made of made up of a hydrophobic chain that is insoluble in water.

Substances are nonpolar substances are those substances which are insoluble in water. Oil is one of them. Polar substances are dissolved in water because they have hydrophilic ends.

Thus, oil does not dissolve in water and remains separate. Oil is a non-polar, hydrophobic substance, according to this.

To learn more about oils, refer to the below link:

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Where can you find energy in molecules?

Answers

Energy, molecules and chemical reactions. Energy , potential energy is stored in the covalent bonds holding atoms together in the form of molecules

A solid will float in a liquid if it is less dense that then liquid, and sink if it is more/dense than the liquid. If the density of the seawater is 1.025g/mL, which type of plastics would definitely float in seawater?

Answers

Answer:

this is the answer \

Explanation:

Why do globes lean sideways?


A.To allow them to spin easier

B.To demonstrate gravity

C.To demonstrate the passing of the seasons

D.To demonstrate the tilt of the Earth's axis

Answers

Answer:

D

Explanation:

Globes lean sideways To demonstrate the tilt of the Earth's axis. Option D is correct.


Globes lean sideways to demonstrate the tilt of the Earth's axis. The Earth is tilted on its axis by about 23.5 degrees. This tilt is what causes the changing seasons on Earth.

When a globe is tilted, it helps us visualize how different parts of the Earth receive different amounts of sunlight at different times of the year. For example, during the summer in the northern hemisphere, the North Pole is tilted towards the Sun, so it receives more direct sunlight and experiences warmer temperatures. At the same time, the South Pole is tilted away from the Sun, receiving less direct sunlight and experiencing winter.

By showing the tilt of the Earth's axis, globes help us understand why we have seasons and why they occur at different times in different parts of the world.

To summarize, globes lean sideways to demonstrate the tilt of the Earth's axis, which helps us understand the changing seasons on Earth. Option D is correct.

To know more about Earth's axis:

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Which of the following groups of organisms uses sunlight to convert carbon dioxide and water into sugar and oxygen?

a. producers
b. decomposers
c. carnivores
d. herbivores

Answers

The answer that you are looking for is: A PRODUCERS

The group of organisms which uses sunlight to convert carbon dioxide and water into sugar and oxygen are producers. Thus, the correct option is A.

What are Producers in the ecosystem?

Producers are any kind of green plants present in the ecosystem. Green plants make their own food by using the sunlight (solar energy) and carbon dioxide gas from the atmosphere with the energy to make sugar. The plant uses this sugar (carbohydrate), also called as glucose to make many different products, such as wood, leaves, roots, and bark.

This process through which plants produce their food is called photosynthesis. Photosynthesis occurs only in the plants which have chlorophyll pigment (chloroplast).

Therefore, the correct option is A.

Learn more about Ecosystem here:

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Unlike mitosis, meiosis results in the formation of *
A. four genetically identical sperm.
B. four genetically different body cells
C. four genetically different sex cells
D. two genetically identical body cells

Answers

Answer:

C

Explanation:

mitosis does body cells while meiosis does sex cells.

Which of the following characteristics is common to both bacteria and viruses?

Group of answer choices

can be killed using antibiotics

contains genetic material

has a cell wall

has a cell membrane

Answers

can be killed using antibiotics

Explanation:

Because kill them

The diagram below shows the movement of particles across a cell membrane. Which
statement describes the process most likely represented by the diagram?
Movement of Particles
Extracellular space
Lipid bilayer
(cell membrane)
DOO
f
dent
Intracellular space
Time
Sodium ions are moving into a cell via osmosis.
Oxygen is moving into a cell via simple diffusion.

Answers

Answer:oxygen is moving into the cell via simple diffusion.

Explanation:

what does it mean by "outline the role" in biology?

Answers

Answer:Tell the function of the labeled thing.

Explanation:

Answer: tell the function of the labeled thingy.
Explanation: none

Examples of self-duplicating structures are the
A) Mitochondria and chloroplasts
B) Mitochondria and cell walls
C) cell walls and chloroplasts
D) Vacuoles and centrioles

Answers

Answer:

A) Mitochondria and Chloroplasts

what characterizes an organism? check all that apply.

Answers

Answer:

1 living thing

Explanation:

Which of the following factors would have the least effect on the carrying capacity of an ecosystem?
a.
the total number of organisms
b.
the available water supply
c.
the available food supply
d.
competitive exclusion

Answers

Answer:

D competitive exclusion

Explanation:

Answer:

D) competitive exclusion!

Explanation:

edge 2020

please help asap ⚠️ i will mark brainliest

Answers

Answer:

i can't see it very well

Explanation:

Please take another picture

How to take care of your body systems? Give 5 sentences plsshshdhdhajshhsdhdhd

Answers

Answer:

kjbj

Explanation:

noiububiubu

1-Live Healthy, eat healthy foods, and get enough sleep

2-Practice good hygiene. ...

3-See friends to build your sense of belonging. ...

4-Try to do something you enjoy every day.

5-exercise regularly, and avoid drugs and alcohol. ...

PLZZ HELP!!! A OR B??

Answers

Answer:

The correct answer would be A, I believe.

When cells lose the ability to regulate the cell cycle they can divide at an accelerated rate and form a mass of cells this mass of cells is preffered to a**

Answers

Yes dddddddddddddddd fg

What are sound waves

Answers

Answer:

Sound is a mechanical wave that results from the back and forth vibration of the particles of the medium through which the sound wave is moving. The motion of the particles is parallel (and anti-parallel) to the direction of the energy transport. This is what characterizes sound waves in air as longitudinal waves.

Answer:

Sounds waves are a type of energy that is manipulated by vibrant energy. Different variations of vibrant energy allows us to hear different sounds.

Explanation:

Or, if you're talking about the Decepticon Soundwave, he's awesome.

Pamela has started to take antibiotics, which kills most of the helpful and harmful bacteria in her body. Her doctor suggested she eat yogurt containing helpful bacteria to reestablish the bacteria in her digestive tract. Why is this important?
1. Bacteria are important to fight off diseases and infections.
2. Bacteria that live in the large intestine provide some vitamins to people.
3. Bacteria break food down into chyme, which is then digested.
4. Bacteria aid in the reabsorption of water in the large intestine.

Answers

Answer:

a

Explanation:

Answer:

A.

Explanation:

some bacteria help fight off disease.

What type of symbiotic relationship does the tiger and the monkey have?

Answers

Answer:

I'm gonna say that they are both mammals

srry if this is not helpful

A golgi complex/ribosome makes proteins that are transported through the endoplasmic reticulum

Answers

Answer:

Yup that's it

Explanation:

The golgi is what makes the individual proteins for the cell.

Fission and fusion are two nuclear processes that produce huge amounts of energy, and both processes involve the production of new
elements as well. Which statements apply ONLY to nuclear fusion?
A)
Fusion begins with an unstable nucleus.
B)
Fusion produces much more energy than fission.
Fusion is the source of nucleosynthesis in stars.
D)
Fusion
utilized in nuclear reactors as a usable energy.
E)
Fusion is the process that supplies the energy we receive from the Sun.

Answers

Answer:

B,C, and E

Explanation:

Just did it on usatestprep

According to the question, Fusion produces much more energy than fission. Fusion is the source of nucleosynthesis in stars.

Fusion is the process that supplies the energy we receive from the Sun.

What are the 2 processes that produce nuclear energy?

There are two fundamental nuclear processes considered for energy production: fission and fusion.

Fission is the energetic splitting of large atoms such as Uranium or Plutonium into two smaller atoms, called fission products. To split an atom, you have to hit it with a neutron.

Thus, option "B" is correct.

To learn more about nuclear energy click here:

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ILL GIVE BRAINLIEST !!
Fossils of a microscopic organism are found in rocks determined to be over 3.5 billion years old. Identify TWO types of evidence that would help answer the question of whether the organism was photosynthetic

Answers

Lemm look back at my answer

Organ _____
are made of multiple organs that work
together to maintain homeostasis in an organism.

Answers

Answer:

systems

Explanation: Cells are organized into tissues, and tissues form organs. Organs are organized into organ systems such as the skeletal and muscular systems. All of the organ systems of the body work together to maintain homeostasis of the organism. If homeostasis fails, death or disease may result.

Organ systems are made up of multiple organs that work together to maintain homeostasis in an animal or multicellular animals. In animals, organ systems are seen, which coordinate to form an organism.

What is an organ system?

Multicellular animals are made up of multiple cells, and these cells work together to make a tissue. All the cells in a tissue have a single function, such as epithelial tissue or nervous tissue; these tissues form the organs. An example is the stomach, which is made up of different types of tissue such as longitudinal smooth muscle, circular smooth muscle, etc.

These organs collaborate to form organ systems like the digestive system, which includes the stomach, small intestine, pancreas, liver. Organs such as the stomach digest food in the organ system, and the small intestine aids in the process by allowing it to absorb into the blood along with digestion. Organ systems are interdependent, such as the digestive system, which is dependent on the nervous system, the circulatory system, and so on.

hence Organ systems are made up of multiple organs that work together to maintain homeostasis.

Learn more about the organ system here.

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True or False? By the way Estuaries are the spots where ocean and river meet (brackish water) Brainliest!!!
Estuaries have very deep waters.
Estuaries are called the “cradle of the ocean.”
Estuaries are stable environments in terms of tides, salinity and temperature.

Answers

Answer:

1. False

2. True

3. True

Explanation:

I'm pretty sure these are right, I hope this helps!

Answer      All are true

1.Are most environmental issues local problems or global problems?

2.How can or will this affect the way we try to solve these issues?

3.How are environmental issues becoming more complex?

4.What about the history of environmental studies can inform us about our current environmental issues? Why is it important to understand the past to help solve current and future environmental problems?

Answers

Answer:

How changes in the human race change from point of views

Which is one way that the movement of matter through an ecosystem is different from the transfer of energy?
A. Only the movement of matter involves living things.
B. Only the movement of matter flows in one direction only.
O
C. Only the movement of matter occurs in an unending cycle.
o
D. Only the movement of matter involves feeding relationships.

Answers

Answer:

The answer is C. the movement of matter occurs in an unending cycle.

Answer:

Only the movement of matter occurs in an unending cycle.

just took the test

what is exact name of..
Thick Walled isodiametric dead cells

Answers

Answer:Sclerenchyma

Explanation:Sclerenchyma is thick walled dead lignified cells, they are hard and elastic. The sclerenchyma cells are divided into two groups namely fibers and sclereids. Sclerenchymatous fibers are branched/unbranched, long, hard, pointed cells with tapering ends, thick walls, and narrow lumen.

Answer:

Sclerenchyma is Greek word where "Sclero-" means hard and "enchyma" means infusion. This tissue consists of thick-walled, dead cells and protoplasm is negligible. These cells have hard and extremely thick secondary walls due to uniform distribution and high secretion of lignin and have a function of providing mechanical support

I hope that answers your question

In plants, the root tip cells are in a continuous process of cell division. These cells require more energy compared to the other root cells. Which cell structure in root tip cells provides this energy? A. Chloroplast B. Nucleus C. Vacuous D. Mitochondria

Answers

D. mitochondria. (that's a weird word lol)

If the herbivore population in an ecosystem increased what would most likely happen to the size of the carnivore population

Answers

Answer:

the carnivore population(s) would increase because their amount of food would increase also

Explanation:

Answer:

Possibly increase

Explanation:

Since there would be an increase of the herbivore population, the carnivores would have more to eat providing more food for their young.

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