Which is an example of a chemical change ? A.a teaspoon of salt dissolves

Which is an example of a chemical change ? A.a teaspoon of salt dissolves B.a candle burns C.a pan of water boils D.a burner gets red hot

2 months ago

Solution 1

Guest Guest #3391
2 months ago
It has to be a because, it dosnt take energy to dissolve the salt

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Which statement best describes the environmental factor that affected the skipper butterflies? A. the butterflies could change color B. The blue variation couldn’t reproduce, so the population became redder over time. C. When the birds moved into the field, they selected against the blue butterflies. D. The green butterflies has red offspring. Please don’t guess. I will give the brainliest to whoever deserves it.
Solution 1

When the birds moved into the field, they selected against the blue butterflies best describes the environmental factor that affected the skipper butterflies.

What do you mean by environmental factors?

Environmental factors, as related to genetics, refers to exposures to substances where we live or work, behaviors (such as smoking or poor diet) that can increase an individual's risk of disease or stressful situations.

Air, water, climate, soil, natural vegetation and landforms are all environmental factors. The environmental factors affect everyday living, and play a key role in bringing health differences across the geographic areas.

An environmental factor, ecological factor or eco factor is any factor, abiotic or biotic, that influences living organisms. Abiotic factors include ambient temperature, amount of sunlight, and pH of the water soil in which an organism lives.

Learn more about environmental factors:

brainly.com/question/6810544

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Solution 2
The answer is C. When the birds moved into the field, the selected against the blue butterflies.
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What happens during meiosis?
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The cell divides and the chromosomes are reduced by half the amount which is also called cell reproduction
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Energy resources are required for which of the following? all nations industrial nations largely populated nations small rural nations
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If it is for Odesseyware the answer is all industrial nations.

Solution 2

Answer:

all industrial nations

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Which organization most likely works to ensure that children throughout the world receive vaccinations for diseases that cause serious illnesses and disabilities?
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World Health Organization (WHO) is an organization that works to ensure that children throughout the world receive vaccinations for diseases that cause serious illnesses and disabilities. WHO partners with government and non- government organizations to provide collective actions needed to ensure that every child is protected from vaccine-preventable diseases.






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The population of polar bears is steadily declining because of higher temperatures in their native environment. Which human activity likely contributed the most to this change?
Solution 1
The population of polar bears is steadily declining because of higher temperatures in their native environment. The human activity that is most likely contributed the most to this change is a high use of fossil fuels.

Please remember that it helps to provide the choices that match your question. This can help you get an accurate answer and have your question answered much quicker.
Solution 2

Answer:

a high use of fossil fuels.

Explanation:

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Answer:

NADP+ ADP and glucose

Explanation:

Solution 2

Answer:

NADP+, ADP, and glucose

Explanation:

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What starts an involuntary swallowing action when it senses food
Solution 1
There are three phases in swallowing which include voluntary and involuntary ways. The oral phase is a voluntary swallowing happens after the mechanical digestion of food and the use of saliva. of food that uses special nerves that signal and help food to be pushed further in the pharynx and then to the esophagus.    The pharynx starts an involuntary swallowing action when senses food. 

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Which activity is an example of the life process known as synthesis
Solution 1
Metabolism can be a life process known to be synthesis. Photosynthesis can also be a life function thatis determined to be synthesis,the combination of light energy, water and CO2. Synthesis is the process of two compounds thru cell processes form a unified compound that will be used for other process.
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Most plant must draw resources from two very different environments. Explain this statement?
Solution 1
On the basis of adaptation to different environemnt plants are classified into different groups which are listed below:

Hydrophytes:
                      These plant grown in equatic environment where plenty of water is availabe. Therefore, their root system is less develop and leaves are broad having sunken stomata.
Example: 
             Ceratophyllum, water lily.

Xerophytes:
                   These plants grown in desert having scarcity of water and plants have develop well root system and leaves are converted into spines in order to preserve water nd other nutrients.
Example:
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Halophytes:
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              Salicornia bigelovii, Spartina alterniflora


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_______ is a cumulative change in the characteristics of populations over time from generation to generation.
Solution 1
Evolution is a cumulative change in the characteristics of populations over time from generation to generation.

Solution 2

Evolution is the answer