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Mariana [72]
3 years ago
6

Which of the following is a physical change? A newspaper burns when placed in a fire. An iron chair rusts when left outside. A s

ample of water boils and releases gas. A plant changes carbon dioxide and water into sugar. Question 3(Multiple Choice Worth 2 points) Which of these statements best describes the relationship between elements, compounds, and pure substances? Pure substances can be divided into two groups: elements and compounds. Compounds can be divided into two groups: pure substances and elements. Elements and pure substances are two of many different types of compounds. Pure substances and compounds are two of many different types of elements.
Biology
2 answers:
kvasek [131]3 years ago
8 0

The answer is: Pure substances can be divided into two groups: elements and compounds.(For 2nd question)

allsm [11]3 years ago
7 0
A because a physical change , changes the appearance. the multiple choice question is A. 
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In Japan, food scientists have produced a type of watermelon that is square instead of
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Genetically modified (GM) foods are the ones came from organisms whose genetic material (DNA) are altered as they do not occur naturally. Food shortage, cost, variety can make people support the GM foods, while, religious beliefs, allergy, and worrying about the food can limit the support for these foods.

<h3>What are the characteristics of GM foods?</h3>

Genetically modified (GM) foods are those derived from organisms the ones genetic material (DNA) has been altered as they do not occur naturally.

Its characteristics are:

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As food shortage, cost, variety can make people support the GM foods, while, religious beliefs, allergy, and worrying about the food can limit the support for these foods.

Thus, the correct option is A.

For more details regarding genetically modified crops, visit:

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6 0
2 years ago
Badlands National Park has heavily eroded geologic formations called
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B. Abiotic

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8 0
3 years ago
Read 2 more answers
Help!!!!!!!!!!!!!!!!!!!!!!!!!!
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Objects with like charges repel/repulse each other while opposite charges attract each other
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3 years ago
If the parent genotypes are Aa and Aa, the offspring are expected to be _____. 1/2 AA and 1/2 aa all Aa 1/4 AA, 1/2 Aa, 1/4 aa 3
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Punnet squares are your friend with these kinds of questions :)

   <u>   A  |  a  |</u>
A <u>| AA | Aa |</u>
a <u>| Aa | aa |</u>

Now we can easily see that 1/4 of the offspring will be AA, 1/2 will be Aa, and 1/4 will be aa. Therefore, it is the third answer that's correct (1/4 AA, 1/2 Aa, 1/4 aa). Hope this helps! :)
7 0
3 years ago
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