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marta [7]
3 years ago
12

Which of the following is a way in which elements and compounds are different?

Biology
1 answer:
lesantik [10]3 years ago
7 0

Answer:

C.  Elements are made of identical atoms, whereas compounds are made of  identical molecules.

Explanation:

Elements are made of identical atoms, whereas compounds are made of  identical molecules because elements are made of atoms of only one kind while on the other hand, compounds are the pure substance that is made of molecules that is similar as well as different from one another. Both element and compound are pure substance. Compound can be broken down by chemical means whereas elements can not be broken down.

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kompoz [17]

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3 0
3 years ago
If a DNA molecule is found to be composed of 35% thymine, what percentage of cytosine would be expected, and why?
-Dominant- [34]
We use Chargaff's rule to get the answer. [A] + [G] = [C]+ [T].    [A] + [G] + [C] + [T] = 100% Where is A is Adenine, G is Gaunine, T is Thymine and C is Cytosine. In DNA, Adenine always pairs with Thymine, and Guanine always pairs with Cytosine. Therefore if Thymine is 35%, then Adenine will also be 35% to make 70% in total. The remaining percentage will be 100% - 70% = 30%. The 30% will be shared equally among Cytosine and Guanine, at 15% each. Therefore Cytosine will be 15% 
4 0
4 years ago
Vascular plants, like Fern, show alternation of generation. which represents a Gamo type in the life of fern? a. rhizomes b. Pro
Elan Coil [88]

Answer: (B) Prothallus

Explanation: Prothallus is the gametophyte stage in the life of <u>a fern or other pteridophyte</u>.

8 0
3 years ago
Please answer the following questions:
seropon [69]

Answer:

1)The criteria pollutants are carbon monoxide, lead, nitrogen dioxide, ozone, particulate matter, and sulfur dioxide. Criteria pollutants are the only air pollutants with national air quality standards that define allowable concentrations of these substances in ambient air.

2)Examples of a secondary pollutant include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight; NO2, which is formed as NO combines with oxygen in the air; and acid rain, which is formed when sulfur dioxide or nitrogen oxides react with water.

3)By bringing national attention to water pollution issues, the Cuyahoga River fire was one of the events that led to the creation of the federal Environmental Protection Agency and the Ohio Environmental Protection Agency.

4)sry idk this one ☝️

5)On Days when High Particle Levels are Expected, Take these Extra Steps to Reduce Pollution:

Reduce the number of trips you take in your car.

Reduce or eliminate fireplace and wood stove use.

Avoid burning leaves, trash, and other materials.

Avoid using gas-powered lawn and garden equipment.

Explanation:

mark me as brainiest pls :)

8 0
3 years ago
Please help me a pioneer in the study of heredity was
andrew11 [14]

Answer:

D, mendel

Explanation:

He discovered the fundamentel laws of inheritance

3 0
3 years ago
Read 2 more answers
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