Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?


The shape of the coal changes.
Oxygen is present.
A new substance is produced.
Coal is made up of more than one element.

Answers

Answer 1
The shape of coal changes

Related Questions

Some of the stars you see in the night sky are already gone. Why is it possible to still see their light?

Answers

Answer:

they are light years away

Explanation:

when you look at the sky you are looking at about 6 million years in the past because time travels differently between space and our atmosphere. That's why astronauts can feel like they have been gone for 3 days but really for 3 months.

Key point:

Light travels differently between space and Earth

Umami is one of the taste types that humans can recognize. Which selections below describes the taste of umami? savoriness, brothy, meaty salty sweet bitter

Answers

Answer:

a. savoury...........

Option A) savoriness, brothy, meaty

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1.What we call the maintenances of constant internal environment of organisms? __________________________


2. Animals which control their body temperature at constant state regardless the changes of external temperature are known as ______________


3. What is the organ in our body which is used as an excretory organ and also used as an organ of osmoregulation?
________________


4. What is the part of the kidney from which urine is taken through the ureter?
_____________________


5. The structural and functional units of the kidney is _______________________.

Answers

Answer:

1. homeostasis.

2.Endotherm (warm-blooded animals).

3.kidneys

4.renal pelvis

5.nephron.

Plants have many characteristics.

What is responsible for these characteristics?

Select all that apply.


inherited from parents

inherited by sibling plants

affected by the environment

affected by soil position

Answers

Answer:bnunununun Noicd

Explanation: skssssss

Which statement describes the best evidence that two species share a recent common ancestor?
A) The species are about the same size.
B) The species eat the same type of food.
C) The species live in the same ecosystem.
D) The species have similar DNA sequences.

Answers

Answer:

I hope this helps you :)

Explanation:

Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.

The statement that describes the best evidence that two species share a recent common ancestor is that the species have similar DNA sequences, which is present in Option D, as the DNA is the genetic material.

What role does the DNA sequence play in evolution?

DNA sequence comparisons have become an increasingly important tool in determining evolutionary relationships between organisms, and after comparing the DNA sequences of different organisms, scientists can determine the degree of similarity between them such as similarities in size, diet, or ecosystem may indicate some degree of similarity between two species, but they do not necessarily provide evidence for a recent common ancestor.

Hence, the statement that describes the best evidence that two species share a recent common ancestor is that the species have similar DNA sequences, which is present in Option D.

Learn more about the DNA sequence in evolution here.

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Why do organisms die if they do not have enough water?​

Answers

Answer:

Organisms need water for the following activities: (1) All cellular processes occur due to water. (2) Transportation of substances in our body takes place by dissolving in water. (3) Terrestrial animals require fresh water for transportation of minerals and for getting rid of waste from their body.

Explanation:

Without water they cant do any of this.

Answer:

Cells will lose water and the chemical reactions take place in water. Without enough water, this can't happen.Explanation:

is this correct please dont randomly answer. but answer if u know

Answers

Answer:

dark colored forest with dark bark

Explanation:

since the population has gone down it shows the moths cannot blend in with their environment

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

Answer:

b. 10,000 plants

Explanation:

Producers, plants, contain the most stored energy in an energy pyramid.

I hope this helped :)

Is 100 because the plant conté in de most

How will your community handle solid wastes that can be recycled?

Answers

Answer:

making it into fertilizer

Explanation:

Now that you have mapped some of the morphological characters on the evolutionary relationships, you should notice conflicts with regard to these characters defining some clades. What other types of evidence do you think scientists used to support this particular phylogeny, assuming the above phylogeny is correct

Answers

Answer:

is a phylogenetic tree for all nine animal phyla that you studied ... Now that you have mapped some of the morphological characters on the ... you should notice conflicts with regard to these characters defining some clades. What other types of evidence do you think scientists used to support this particular ...Explanation: Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.                             Hope It Helps Here For Your Help

All the following are part of photosynthesis except:
Group of answer choices

Transforms solar energy into chemical energy

Plants, algae and cyanobacteria can do it

Helps in making protein building blocks

Producers that are fed to consumers

Answers

I’m not sure I think it’s D.) Hope I could help :)))



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Producers that are fed to consumers

Putrescine and cadaverine are short aliphatic diamine compounds produced during the breakdown of amino acids in both living and dead organisms. What tests, including solubility, would you run in order to confirm their structure

Answers

Answer:

In order to confirm the structure of Aliphatic Diamine Compounds, you'd need to run a set of tests. They are:

A. Preliminary or Initial Tests:

I. Tests for Physical Traits: this helps to determine or establish the physical traits of the substance. Characteristics such as State of Matter (e.g. solid, liquid) color, and odor.

II. Ignition test. This involves the application of heat on a minuscule amount of the compound or substance using a metal spatula. This helps to prove whether the compound is aliphatic or aromatic. An aliphatic compound such as methylated spirit is aliphatic because it produces a luminous flame. Vegetable Oil on the other hand is aromatic because it produces a sooty flame.

B. Physical Constants

This test aims to establish the boiling and melting points of such a substance.  

C. Analysis for elements present

D. Solubility tests

Explanation

Amine compounds are easily distinguishable by their odors. Amine odors have a somewhat fishy almost putrid quality.

When they are at room temperature,  they are present as gases and can easily evaporate in their liquid state.

Their relative densities are lower than that of water. with the exception of aromatic amines.

Cheers

Which statement provides the best argument against making major changes to the atmosphere to help protect Earth’s resources? There will be less soil and dust in the air as construction increases. The atmosphere will improve as more people move to large cities. Making major changes to the atmosphere can be a costly process. It is more important to protect land and water resources than the atmosphere.

Answers

The answer is C. Making major changes to the atmosphere can be a costly process

Explanation:

Making major changes to the atmosphere can be a costly process.

The atmosphere refers to the layer of thin gases that lie above the surface of the earth. Plants and animals depend on the atmosphere for survival because it is region in which gaseous exchange takes place.

Changes to the atmosphere is very costly because it involves changes such as alteration in the kind of cars that are used and devising of alternative sources of energy etc. All these are expensive adventures.

Learn more: https://brainly.com/question/880302

What term means removing the nucleus from a cell?
A.enucleation
B.disnucleation
C. nuclear fission
D. nuclear proliferation​

Answers

The answer is a because the CoraLatino so just choose a it’ll work because it happens

When the offspring's phenotype is a "combination" (mixture) of parents' phenotypes

A) Punnett square
B) Polygenic inheritance
C) Codominance
D) Incomplete dominance

Answers

Answer: C) Codominance

Explanation:

When the offsprings phenotype is a combination of both parents

Answer:

I think the answer is incomplete dominance!! my teacher just explained it

Explanation:


1. How is the goal of evolutionary classification dif-
ferent from Linnaean classification?

Answers

Answer:

The goal of evolutionary classification is to group species into larger categories that reflect lines of evolutionary descent, rather than overall similarities. The goal of linnaean classification is to group species into larger categories based on physical characteristics.

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

Answer:

d

Explanation:


Letter D, I think. “All of these”

Pls help me with this giving brainlist !!

Answers

Answer:

1. Texas A&M University

2. Texas's premier research agency in agriculture, natural resources, & life sciences

Explanation:

2. Which of the following is not used to study plate tectonics:
A) paleomagnetism
B) earthquake waves
C) sand dunes
D) fossils

Answers

Answer:

c) sand dunes

Which of the following types of cells have cell walls?
A. Red Blood Cell
B. Nerve Cell
C. Cork Cell
D. Animal Cells

Answers

Answer:

cork cells

Explanation:

A cork cell has a cell wall that has a waxy substance that is impermeable to gases and water called suberin.

13. The cell membrane is made of a _________________________.

Answers

The cell membrane is made of lipids, protein, and carbohydrates.

Please help me answer these two questions. Thanks

Answers

Answer:

2nd Answer: Animal would not be able to dive as long

The seal

Explanation:

Please give me BRAINLIEST and THANKS lol <( ̄︶ ̄)>

Beginning your introduction to your research paper with a question is a great way to capture the reader's interest.


True
False

Answers

Answer:

True

Explanation:

Yes it is since it intrigues to reader to go deeper into your research paper. In addition, it also gives you good dialoge for what you write/say next.

Which label belongs in the area marked Y?
A. Neither allele is dominant.
B. An intermediate phenotype is expressed in offspring
C. One allele is dominant over the other.
D. Both dominant alleles are fully expressed in offspring Y ​

Answers

I believe the answer is C

Answer:

the answer is A

Explanation:

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

Answer:

B the plants

Explanation:

The first level on a food pyramid has the most stored energy

I need help to make an acronym with these words( WILL GIVE MOST BRAINILIST)

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species


like, for example, "please excuse my dear aunt sally"

(parenthesis, exponents, multiplication, division, addition, subtraction.

Answers

Answer:

Dear kate please call our friend gary sarah

Which of the following is a consumer? *
1 point
Seed
Grass
Insect
Fruit
HELP ME PLESE NEED IT BY TODAY WILL GIVE U 10PIONTS HELPPPPPPPPPPPP

Answers

insect is a consumer im pretty sure

Insect is the answer.

.. .. ..

What two features do
geologists use to classify
crystals?

Answers

crystal structure and shape

Transplration is the process by which _______.

plants add water to the atmosphere
animals break down food into energy
plants break down food into energy
plants make food. Please answer fast

Answers

Answer:

plants add water to the atmosphere

Explanation:

transpiration is the loss of water from the plants in the form of water vapors ... so that way...

Answer:

Plants add water to the atmosphere

Explanation:

Water is given out as vapour into the air

the process by which the characteristics of a species change over many generations in response to the environment
variation
variation

adaptation
adaptation

natural selection
natural selection

Evolution

Answers

The answer is Adaptation