Which substance cannot be separated by physical means or chemical means?

A: Mixture

B: Compound

C: Solution

D: Element

Answers

Answer 1

Answer:

I think its D

Explanation:

..........

Answer 2

Answer:

D: Element

Is the answer...


Related Questions

Fill in the blank. Giraffe necks and mice necks have the same number of vertebrae, despite their different sizes and functions. This is an example of a(n) _______. The wings of insects, bats, and birds are structurally different but achieve similar functions. This is an example of a/an _______. The peppered moth provides an example of _______, as the predominant color of moths changed over time as pollution dictated which color was best camouflaged for protection from predators. Respond to the following based on your reading. Two species, a cactus and a Venus fly-trap, have a water intake system that's similar in function but not in structure. What type of structure is this? A scientist is trying to determine if two species are closely related or if they just have the same external features. What would you look for to make this determination? You go to school and discover that your friend got admitted to the hospital for a burst appendix. You want to learn if the appendix serves a function in our bodies. What would you need to research? A species of beetle in Africa looks really similar to a different species in South America. How would the environment influence species development? Why does Australia have so many genetically distinct organisms?

Answers

Answer:

homologous structure

analogous structure

natural selection

This is known as an analogous structure.

To make this determination, you need to think about if the features are the same in function or also in structure. Features that have a closely related structure and function are likely to be related.

To learn more about why your friend is in the hospital, you should research vestigial structures.

These two beetles aren't closely related, but they look and behave similarly. This is because they live in the same environmental conditions and likely share a common ancestor that lived in Gondwana (the supercontinent that included the southern continents before they split apart through plate tectonics).

Australia has so many genetically distinct organisms because it has been separated from other bodies of land by water for a very long time. This has created an opportunity for long-term independence of other geographic areas.

Explanation:

Penn Foster

Answer:

1. homologous structure

2. analogous structure

3. natural selection

4. This is known as an analogous structure.

5. To make this determination, you need to think about if the features are the same in function or also in structure. Features that have a closely related structure and function are likely to be related.

6. To learn more about why your friend is in the hospital, you should research vestigial structures.

7. These two beetles aren't closely related, but they look and behave similarly. This is because they live in the same environmental conditions and likely share a common ancestor that lived in Gondwana (the supercontinent that included the southern continents before they split apart through plate tectonics).

8. Australia has so many genetically distinct organisms because it has been separated from other bodies of land by water for a very long time. This has created an opportunity for long-term independence of other geographic areas.

Which claim is supported by significant scientific research?
A. In the last 10 years, sea level has risen twice as fast as in previous
centuries.
B. There is no reason to believe humans are causing recent global
warming
c. In the last 10 years, Earth has been cooling off.
D. Weather anomalies can be used as evidence for and against
climate change.

Answers

Answer:

A

Explanation:

My guess would be A.

It’s excepted by the scientific community that climate change is a thing, and that we human are the cause.

We know this, because of the type of carbon that in the air is the same type as those found in fossil fuels.

So, because carbon dioxide is a greenhouse gas, one of the predictions is that as we add more carbon dioxide in the atmosphere the earth gets warmer, and the polar icecaps start to melt and that adds to the volume of the sea water.

So, it’s A.

I hope that helps.

Gregor Mendel crosses a true-breeding tall plants (TT) with a true-breeding short plant (tt). What are the predicted phenotypes for the offspring ?

a. all tall
b. all short
c. ratio of 1 tall : 1 short
d. ratio of 3 tall : 1 short

Answers

Answer:

a. all tall:

Explanation:

Tall plants (TT) are the more dominate trait. Use the Pundett square (I will try to recreate it as best as possible but it will not look good):

     t       t

T  Tt      Tt

T   Tt     Tt

As you can (kind of) tell, T appears on all offsprings, and as the dominate trait, it will take over 100% of the time.

The next generation (depending on who you are breeding them with), will have a different result.

~

Which of the following lists the order of taxonomic levels from the largest to the smallest group?
domain, kingdom, class, order, family, phylum, genus, species
species, genus, family, order, class, phylum, kingdom, domain
class, family, order, domain, kingdom, phylum, genus, species
domain, kingdom, phylum, class, order, family, genus, species

Answers

Answer:

domain, kingdom, phylum, class, order, family, genus, species

Explanation:

which is d on edge 2021 :)

Domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group.

What is taxonomy?

Taxonomy is a branch of science which deals with the classification of organisms on the basis of similarities and differences. It starts from domain and ends with species so we can say that domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group

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Why we should be concerned about the increase in amount of the green house gases in the atmosphere?

Answers

Answer:

We should be concerned about the amount of green house gases released into the atmosphere because the more gases are released, the more they accumulate in the atmosphere and trap heat, which contributes to global warming, which is causing massive changes in our environment all around the world.

Would all of the reptiles in an area be considered a population? Explain.

Answers

Technically yes because they are all one species living in close proximity

All the reptiles which are living in an area can be considered as a population technically. Thus, the reptiles can be a population.

What is a Population?

A population is any kind of complete group with at least one characteristic in common between different species. Populations are not just people or organisms. But, the populations may consist of, however are not limited to, people, animals, businesses, buildings, motor vehicles, farms, objects, or events.

Population data contains various types of influential details such as birth, death, demographic information such as the age, sex, annual income, occupation, language of the species in an ecosystem. The overall socio-economic, economic, political, cultural progress of a country is dependent upon the population data to a large extent.

Learn more about Population here:

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The difference between a habitat and a niche is that a niche is

A. The specific functional role of an organism

B. The organism's preferred habitat

C. The kind of place an organism occupies.

Answers

Answer:

A. The specific functional role of an organism

Explanation:

A habitat is the general place where an organism lives and a niche is the range of physical and biological conditions in which a species lives and the way the species obtain what it needs to survive and reproduce.

During which phase of meiosis does crossing over of chromosomes occur?
prophase I
metaphase I
anaphase I
telophase I

Answers

Answer:

prophase l

Explanation:

Answer:

prophase 1

Explanation:

Which of the following ecological levels is correctly paired with its description?

A) Organism - all of the species living in a given area

B) Community - a group of one species living in a given area

C) Population - the regions on Earth that can support life

D) Ecosystem - all of the living and nonliving factors in an environment

E) Biosphere - anything that meets all of the characteristics of life

Answers

The correctly paired ecological level with its description is the option D. Ecosystem - all of the living and nonliving factors in an environment, among given options.

An ecosystem is a geographic region or area where all the living factors including animals, plants, bacteria, and others interact with all the physical or non-living factors such as landscape, humidity, water, and many more.

Other given ecological level and their description:

Organism - an organism is the living being that is the simplest form of ecological level composed of organ systems.Community - It is a population with similar characteristics that live in a particular area.Population -  a group of members of a particular species living and interbreeding within a given area.Organisms > Population > community > ecosystem

Thus, the correct answer would be option D.

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You create a punnett square to determine the probability of hair color being passed to
offspring. Brown hair is dominant. Blond hair is recessive. Both parents have brown hair.
Both parents are heterozygous. What is the probability that the offspring will also have
brown hair?
ofteprings Brown hair to de

Answers

Is this what you were looking for :D

Answer:

75%, or 3/4's

Explanation:

Parent's genotypes are Bb because they are homozygous & brown hair is dominant. Cross this, and you get the genotypes of the offspring: BB, Bb, Bb, and bb. The proability that offspring will also have brown hair is 3 out of these 4 genotypes, so 75%.

What is the function of flowers?
Transport nutrients
Gas exchange
Reproduction
Support stem

Answers

The answer to this information is reproduction

Answer:

The function is reproduction.

According to the universe expansion model, objects in the universe are continually moving away from each other. According to the figure above, what evidence would support the universe expansion model?

A. Light moving away from the Earth would experience a red shift and the wavelengths would get longer.
B. Light moving away from the Earth would experience a red shift and the wavelengths would get shorter.
C. Light moving away from the Earth would experience a blue shift and the wavelengths would get longer.
D. Light moving away from the Earth would experience a blue shift and the wavelengths would get shorter.

Answers

Answer:

a.) Light moving away from the Earth would experience a red shift and the wavelengths would get longer.

Explanation:

A substance valued or required by any organism(s) for survival is defined as a ____

Answers

Answer: resource

Explanation:

A substance valued or required by any living organism(s) for survival is defined as a resource.

What is living organism ?

The environment consist of both  living and nonliving organisms with two interacting components such as Physical or abiotic and biological or biotic components.

The physical component are  temperature, light, soil, air, and water where as the biological component are animals, plants, and microorganisms.

The biotic components are plants, animals, and micro-organisms while green leaves of the autotrophic plant have chlorophyll and this pigment help in making  food using light, water, and carbon dioxide by the process of photosynthesis.

Animals on the other hand are heterotrophs need nutrients and absorb nutrients such as nitrogen, phosphorus, and calcium from the soil.

Decomposer and Scavengers  feed on the dead bodies and decaying substances, animal release the nutrients trapped inside them.

Learn more about living organism, here:

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List the order in which Consumers arrive to your new ecosystem

Answers

The food chain ?
Sun
Primary producers
Primary consumers
Secondary consumers
Tertiary consumers

In the 2 sentences or less how can we solve global warming

Answers

Explanation: We can turn of the lights when were not using them and use bike rids instead of car rides use solar panels.

Kendra was removed from the voting committee for Homecoming King because one
of the nominees was her boyfriend. Why was she removed?
bias
stereotype
OOO
manipulation of information
vested interest

Answers

Answer:

Bias

Explanation:

definitely because she could have been biased

Why is water so effective at hydrogen bonding?

Choose 1 answer:

(Choice A)

The hydrogens in water are ionically bonded to the oxygen.

(Choice B)

Hydrogen is more electronegative than oxygen, so it is more likely to donate its electrons to oxygen.

(Choice C)

Oxygen is very electronegative and strongly attracts hydrogen's electron.

(Choice D)

There are two hydrogens, doubling the positive charge on the water molecule.

Answers

Answer:

Choice A

Explanation:

Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.

What is something that happens when you change the wavelength?

Answers

Answer:

efd

Explanation:

imk a black ni gge r

the frequency of the sound changes

HELP ANSWER FAST!!!!!!! BRAINLIEST IF CORRECT!!!!!!!!! When you hammer a nail, which types of energy are you using? Select ALL of the correct answers.

physical energy
kinetic energy
mechanical energy
potential energy

Answers

Answer:

Kinetic energy

Explanation:

Whenever the hammer will hit the nail it's kinetic energy will be decreased.


Sleet is precipitation made of small particles of ice. How does sleet form?

Answers

Answer:

Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets. Sometimes the snow does not completely melt and the partially melted snowflakes refreeze into snow pellets.:

hope this helps!

Answer:

There must be a layer of air near the ground whose temperature is below freezing, where water turns to ice. Above this layer of freezing air must be a layer of warmer air. As snow falls through the warm air, it melts or partially melts into raindrops. It forms sleet before it reaches the ground.

Explanation:

:3

58:22
Which best explains why earthquakes sometimes occur in the same locations as mid-ocean ridges and rift valleys?
Plates bump as they slip past each other at convergent boundaries.
Plates get stuck as they move past each other at convergent boundaries.
Crust gets cracked and forms faults as plates collide along divergent plate boundaries.
Faults form because crust gets cracked when plates move apart along divergent plate boundaries.
sy

Answers

Answer:

The correct option is D: Faults form because crust gets cracked when plates move apart along divergent plate boundaries.

Explanation:

Options A and B are incorrect because even though tectonic plates are constantly moving and crashing against each other at convergent plate boundaries, it is not responsible for causing an earthquake. Option C is also incorrect in the context of the question statement merely colliding does not result in an earthquake.

Hope that answers the question, have a great day!

(also, please remember to give 'brainliest' if you found this answer helpful :)

Answer:

Faults form because crust gets cracked when plates move apart along divergent plate boundaries.​

Explanation:

Due to the movement of the plates in two different directions, the crust gets cracked and this leads to the formation of divergent boundaries that pulls the two sides apart, and as a result, the earthquakes are created and some of them may occur in the same location. Rift valleys are also formed by this process.

Which of the following is an autotroph in the food web below?

Answers

I do not see the food web
I can’t see the food web. I am sorry. And according to google an autotroph is an organism that synthesis organic to inorganic only using everyday sources such as the sun and the air.

I hope that helps

During mitosis, the original cell produces two daughter cells. How many daughter cells will be produced if 250 mouse cells undergo mitosis?

Answers

Answer:

There would be 500 daughter cells if 200 mouse cells went through the process of mitosis. (If that's what your asking)

Explanation:

During mitosis, the organism (which would be an asexual producer) doubles the amount of chromosomes and they divides the doubled number by two. So the organism will always end up with two daughter cells with the same number of chromosomes as itself. (That is the way with asexual producer's-their offspring is always an exact replica of the first). Now, if you take one mouse, it would end up with 2 daughter cells. If 250 mice reproduce, each with two daughter cells, then there would be 500 daughter cells in total, because you would multiply 2 by 250.  

The number of daughter cells that will be produced is;  500 daughter cells

Mitosis is a process of cell replacement or cell growth whereby a cell divides into two exact daughter cells containing the same number of chromosomes each as the number of chromosomes contained in the parent cell.

Given that the original cell produces two daughter cells, when 250 mouse cell undergoes this process we will have

250 * 2 = 500 daughter cells.

Hence we can conclude that the number of daughter cells that will be produced is 500 daughter cells

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Which best describes what geologists study?
A. Earth's water and ice supplies
O B. Plant and animal life on Earth and other planets
C. The origin, physical history and structure of Earth
D. Earth's atmosphere and weather

Answers

Answer:

C

Explanation:

I’m pretty sure, it’s not meteorology or biology, and I don’t think water supplies are a part of geology, so it should be the origin physical history and structure of earth

Answer:

c

Explanation:

Why did Gregor Mendel use peas in his experimentsGregor Mendel’s research formed the basis of the field of

Answers

Answer:

Peas have characteristics that have two forms. Scientists often use fruit flies as a method to test hypotheses about human genes.

Explanation:

Which cellular process creates energy?

A. The conversion of ADP to ATP

B. The breaking of the chemical bond between the 2nd and 3rd phosphate
molecules in ATP.

C. The breaking of lipid chains.

D. The transportation of ions across the membrane.

Thank you!!​

Answers

Answer:

B. The breaking of the chemical bond between the 2nd and 3rd phosphate

molecules in ATP.

Answer:

The conversion of ADP to ATP if I remember correctly.

An ecosystem that has almost the same number and type of organisms for many years is exhibiting ___

Answers

Answer:

equilibrium

Explanation:

The force of the Earth's gravity on an object gives the object its __________.
volume
mass
weight
density

Answers

Answer:

weight

Explanation:

The gravitational force between a mass and the Earth is the object's weight.

Answer:

Weight

Explanation:

Whe weight of an object is the force of gravity on the object and may be defined as a mass times the acceleration of gravity,w=mg.Since the weight is a force,its SI unit is the newton.

How do the activities of squirrels affect oak trees?
A.
They cause the trees to produce acorns during the winter.
B.
They make it more difficult for the tree to reproduce.
C.
By removing acorns, their behavior causes harm to the trees
D.
They help the trees reproduce more successfully

Answers

Answer:

I want to say it is

They help the trees reproduce more successfully

Explanation:

this is because the others do not make sence

quick i have 6 MINUTES!!!!!!!!!!!!!

Answers

Answer:

6.D and 7.A

Explanation:

Answer is
6) D. , 7) A.
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