There are different forms of energy and one form of energy can be converted into another. When we light a wax candle, the process is highly exothermic and on burning, the chemical energy of the wax gets converted into heat and light. A good source of energy is to be selected for the choice of work to be done. In ancient times, wood was the most common source of heat energy. We, in our daily lives, use various energy sources for doing the work. Nowadays we use diesel and electricity to run trains. We also use fossil fuels in vehicles which has some serious disadvantages, mainly air pollution. The recent example of air pollution was ‘Smog’ in the National Capital Region of Delhi. This pollution was a result of burning ‘Parali’ in northern states of the country, which affected the eyes and also caused serious respiratory problems.
4(a) State the energy conversion that takes place when we light a wax candle. 1
4(b) List two criteria of selecting a source of energy for a specific work. 1
4(c) Write the names of two fossil fuels. 1
4(d) why are we looking at alternate sources of energy? 1

Answers

Answer 1

Answer:

shiii tbh thats hard

Explanation:


Related Questions

Edward is extremely romantic and wants to give Bella an entire bouquet of pink snapdragons, her favorite flower. Unfortunately, Edward only has red snapdragons in his greenhouse. In order to produce the most number of pink snapdragons, what color flower should Edward cross with his red snapdragons?


Can someone help me with this question?


Thanks.

Answers

White snapdragons because red and white make pink

what is the correct equation for photosynthesis?

Answers

Answer:

6CO2 + 6H20  ⇒ C6H12O6 + 6O2

Explanation:

Carbon Dioxide + Water ⇒ Glucose + Oxygen

Photosynthesis is the process through which plants prepare their own food in the presence of sunlight in the chloroplast of the cell.

What is Photosynthesis?

Photosynthesis is the process of transformation of energy from solar energy (radiation) into chemical energy. The chemical energy is present in the form of chemical bonds present in the glucose molecule (carbohydrate).

The process of photosynthesis is commonly written as:

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

This means that the reactants in the process are six molecules of carbon dioxide and six water molecules, are converted by the light energy (radiation) captured by chlorophyll into a sugar molecule (carbohydrate) and six oxygen molecules, as the products.

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Which statement best explains why this occurred?

Answers

there's no picture !

DONT ANSWER WITH THE SAMPLE RESPONSE ik I missplet that)


According to the author, what is the main reason for the decrease in trillium in the forest? What evidence does she give to support her claim?

Answers

The author cites a research study performed by scientists as evidence to support her claim. ... One was left open to deer, and the other was fenced off.

Answer:

The main reason for the decrease in trillium is the large number of deer in the forest that are eating the trillium. The author cites a research study performed by scientists as evidence to support her claim. In this study, researchers planted two fields, each containing garlic mustard and trillium. One was left open to deer, and the other was fenced off. Scientists kept track of the fields for several years. They found that trillium was able to regain much of its original space in the protected field. In the unprotected field, there was still more garlic mustard because the deer ate the trillium. The author also states that similar research studies have been conducted in many forests across the United States, and they all reveal similar results.

Explanation:

Which provide evidence for the general theory of relativity? Check all that apply
gravitational lensing
the constancy of the speed of light
the curvature of space-time
changes in Mercury's orbital path
O gravitational redshift

Answers

Answer:

Gravitational redshift

Explanation:

Gravitational redshift, changes in a planet's orbital path, gravitational lensing provides concrete evidence for the general theory of relativity. Hope this is helpful and the answer you were looking for!

Answer:

1 4 5

Explanation:

PLEASE HELP
Describe the 3 ways plant seeds are dispered by other organisms. *

Answers

Answer:

Because plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire. Dandelion seeds float away in the wind.

Explanation:

Answer:

Plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire.

HURRY WHAT IS THE ANSWER IM TIMED ON THIS?!?!?!

Answers

Answer:

3. A solution where there are less solutes in the solution than in the cell.

Cleo found an arthropod in a grassy field. The arthropod has six pairs of legs, two pairs of antennae, two body sections, and an open circulatory system

Q: Which conclusion is best supported by the information?

A: The arthropod is an arachnid because it has two body sections and an open circulatory system.
B: The arthropod is an arachnid because it has six pairs of legs and two pairs of antennae.
C:The arthropod is a crustacean because it has two body sections and an open circulatory system.
D: The arthropod is a crustacean because it has six pairs of legs and two pairs of antennae.

Answers

Answer: C:The arthropod is a crustacean because it has two body sections and an open circulatory system.

Explanation:

Crustacea are the arthropods. which includes the crabs, shrimp, barnacles, and others. These are the insects. These are the invertebrates. They have hard exoskeleton and segmented body forms. They are bilaterally symmetrical animals. They have four to six pairs of appendages which are jointed. Open circulatory system is present due to lack of developed blood vessels circulation.

Answer:

c

Explanation:

got it right on enginuity

How do abundant growth and care resources affect ecosystem?

Answers

Answer:

over exploitation

Explanation:

Which is a component of cell theory?

Answers

Answer:

here are some points

Explanation:

A component of the cell theory is that all living things are composed of one or more cells. A component of the cell theory is that the cell is the basic unit of life.A component of the cell theory is that all new cells arise from existing cells.

Emily has a class assignment to study conservation of energy and collisions she starts with two golf balls that hang from strings and hit each other when they swing explain how Emily's is the two golf balls that collide​

Answers

Answer

its the force of gravity

Explanation:

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Gravity an why out of all names Emily

Which of the following is NOT an example of stored chemical energy?
glucose
ATP
bread
starch

Answers

Answer:

The answer is ATP

Scenario 1
When you think of the American Southwest, you probably think of cacti, both big and small. If you were to
visit the American Southwest today, you might be disappointed with the lack of variation among cactus
species, especially right off the major highways. In 1926, Route 66 was the nation's first major highway to
allow visitors to visit the Southwest. Like many tourists, these visitors wanted to take home a memento of
their travels. Many people would pull over and begin looking for their own living souvenir. Since many of the
tourists did not have the necessary tools to extract a spiny cactus out of the soil, they usually had to make a
conscious decision about what type of cactus they should dig up. The cacti with too many spines were seen
as too difficult to dig out, and the visitors likely didn't have gloves to protect their hands. The cacti with too
few spines were seen as homely and were often overlooked. Therefore, the tourists found a cactus that was
between these two extremes. Over the last century, the phenotypic variation within these small cacti has
changed (at least in areas accessible by these highways).

Answers

gurl what are you asking

How do these animals most likely make up for not being able to store adequate energy in fat reserves?

A) by arousing from hibernation every day to venture outside their burrows to forage for food
B) by breaking down the chemical energy stored in other parts of their bodies, such as their muscles
C) by storing extra food in their burrows so that they can refuel during periodic arousals from hibernation
D) by lowering their metabolic rates so drastically that their bodies require a

Answers

There isn’t enough information about what type of animal we’re talking about but your answer could possiblh be D

How do cats catch worms

Answers

Pretty sure they watch them closely and then attack them. Or like the other person said with the tree part. I’ve seen a stray catch stalk it for awhile before attacking it

replicate the following dna strand TAT-TAG-ATT-ACA

Answers

The replicated strand of DNA is. ATA-ATC-TAA-TGT

Adenine pairs with Thymine
Guanine pairs with Cytosine

If you have trouble remembering just think about it as curvy letters stick together(C,G), and straight letters go together (A,T)

The replication of the given DNA strand TAT-TAG-ATT-ACA is ATA-ATC-TAA-TGT.

What is DNA replication?

DNA replication may be defined as a type of biological process through which the genomic DNA of an organism gets copied into the cell during the time of cell division. During this process, the two identical replicas of DNA are produced from one original DNA molecule.

According to the context of this question, when it comes to DNA replication, adenine is replaced by thymine and vice-versa while guanine is replaced by cytosine and vice-versa. So, the amount of adenine remains equal to the amount of thymine and the amount of guanine remains equal to cytosine.

Therefore, the replication of the given DNA strand TAT-TAG-ATT-ACA is ATA-ATC-TAA-TGT.

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Describe how transposable elements create mutations within an organism and how transposable elements facilitate chromosomal rearrangements.

Answers

Answer:

Transposable elements are discrete segments of DNA that can be excised and reintegrated to another site in the genome, these can inactivate the gene in which they reside, cause chromosome breaks, and / or transpose to a new location within the genome.

Explanation:

Transposable elements are fragments of DNA that have the ability to jump from one part of the genome to another. While most of the DNA is always in the same place surrounded by the same neighboring pieces of DNA, mobile elements move from one place to another causing many changes or mutations. When a transposon moves through the genome, it can insert into a vital gene, disrupting its function, or into a location near vital genes, causing erroneous activation or inactivation.On the other hand, there can be chromosomal rearrangements due to transposons of the same family with complementary sequences that are separated in the genome and that by sequence homology match. This can lead to ectopic recombination. Large-scale rearrangements induced by mobile elements are considered a particular class of recombination events that influence genomic plasticity.

in which amino acid imidazole group found​

Answers

Answer:

Histidine contains imidazole group which can be uncharged or positively charged, depending on its local environment. Lysine & arginine contains positively charged R group while glutamate has negatively charged R group.

the person in the picture has a lot of potential energy? true or false

Answers

Answer:

True

Explanation:

Answer: he has a great smile and I don't spot a slouch, he looks aware of everything going on around him... I say the kid has potential energy

Which of the following statements about exponential growth curves is true?
- a. Exponential growth curves are common for R-selected species.
b. Exponential growth curves show fast growth rates followed by slow growth rates.
C. No organisms in nature experience exponential growth rates.
d Exponential growth curves are S-shaped.
Please select the best answer from the choices provided
B
ОООО

Answers

Answer:

Which of the following statements about exponential growth curves is true?

- a. Exponential growth curves are common for R-selected species.

Explanation:

The statement that is true about exponential growth curves is as follows:

Exponential growth curves are common for R-selected species.

Thus, the correct option for this question is A.

What is an Exponential growth curve?

An Exponential growth curve may be defined as a type of growth curve that significantly illustrates greater increases in the population of organisms with respect to time. It immediately represents the growth with extreme fast rates.

Exponential growth is followed by the continuous breeding population which contains more individuals than a similar population breeding annually. It includes examples like some insects, r-selected species, etc.

The shape of the exponential growth curve is J-shaped. It represents only fast growth rates. While the logistic growth curve shows fast growth rates followed by slow growth rates. It possesses a shape known as S-shape. It represents the growth rate of k-selected species.

Therefore, the correct option for this question is A.

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Please give the answer for this!

Answers

for the first picture the stimuluis is light and the respons is phototropism(the plant is oriented towards the source of the light)

for the second picture the stimulus is the signt and smell of the food. the respons is salivary secretion

Answer:

1.

Stimulus: The light

Response: The plant gets light energy required to function

2.

Stimulus: The food in the bowl

Response: The dog digests the food absorbing nutrients needed to continue operating.

Hope this helps, feel free to give brainliest :)

Are the fatty acid tails saturated or unsaturated?
and What type of lipid is shown in the picture?

Answers

Answer:

The fatty acid tails saturated or unsaturated is discussed below in details.

Explanation:

Fatty acids contain a carboxylic acid association and a great hydrocarbon series, which can either be saturated or unsaturated. A saturated fatty acid tail only contains carbon-carbon individual bonds, and an unsaturated fatty acid has at the slightest individual carbon-carbon twice or triples bond.

What is its primary function of the structure?

Answers

Answer:

What structure? Tell me and I'll come back and edit this answer to help!

Explanation:

Plant cells are what build/make-up the plants although the main purpose is Photosynthesis

Photosynthesis happens in the Chloroplasts of the plant cell and it is the process that plants get food, by taking advantage of Sunlight, Carbon Dioxide, and Water

A plant uses sunlight to make its food. What kind of energy transition is
taking place?
O A. Sound energy to heat energy
B. Mechanical energy to light energy
C. Light energy to chemical energy
D. Chemical energy to heat energy

Answers

Answer:

I don´t correctly remeber this part of science, but i am going to take a guess and say D) Chemical energy to heat energy

Explanation:

Answer: I believe it is C. Light energy to chemical energy.

Explanation: I think it is C. because this process is photosynthesis which is the process of taking sunlight (which would be light energy) and making oxygen and glucose (which I think would be chemical energy).

HELPP ASAPP PLEASE !!!!

Answers

Answer:

galaxy x and z

Which microscope is used to check organelles of human cheek cell?

Answers

Answer:

4x or 10x

Explanation:

You need one of those to find the cells and then you can increase magnification

access the capabilities of animal and plant cell types owing the presence or absence of chloroplast and cell wall

Answers

Answer:At this point, it should be clear that eukaryotic cells have a more complex structure than do prokaryotic cells. Organelles allow for various functions to occur in the cell at the same time. Despite their fundamental similarities, there are some striking differences between animal and plant cells (see Figure 1).

Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Explanation: pls give me brainest

The cell membrane (plasma membrane) is describe as a highly selective
barrier composed of alipid bi-layer. This structure plays an important role
in moving molecules across the cell membrane in order for the cell to
maintain homeostasis. If the cell is unable to take in the materials it needs
or remove vwhat it does not need, the cell may die. This inability of cells to
maintain homeostasis may cause sickness or even death of an organism.
Why is it important that the cell membrane is highly selective?
O So that the cell wall is stabilized and maintains its rigidity.
O To prevent certain ions and molecules from entering or exiting the celI.
O So that proteins and lipids can attach to the membrane where needed.
O To allow movement of materials in and out of the cel.

Answers

Answer:

O To prevent certain ions and molecules from entering or exiting the celI.

Explanation:

The cell needs to keep a constant chemical composition on the inside in order to mantain homeostasis

Which organelle aids in the production and movement of proteins and other materials through the cell?Which accurately labels the lysosome?

Answers

Answer:

Hey

Explanation:

✴Endoplasmic Reticulum organelle aids in the production and movement of proteins and other materials through the cell.

9. Why is it not reasonable to think that all variables can be controlled?
I

Answers

Answer:

Any given experiment has numerous control variables, and it's important for a scientist to try to hold all variables constant except for the independent variable. If a control variable changes during an experiment, it may invalidate the correlation between the dependent and independent variables.

Explanation:

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