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andreev551 [17]
3 years ago
10

All of the listed human actions affect the nitrogen cycle, with the exception of the

Biology
1 answer:
pav-90 [236]3 years ago
4 0

<span>runoff of pesticides into streams and lakes.</span>
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On the pH scale, acids fall between ____ and bases fall between
skelet666 [1.2K]

Answer:

The correct answer is - O and 6.9; 7.1 and 14

Explanation:

A measuring scale that tells about the acidity or basicity or alkaline nature of a particular object or solution is possible with the help of a pH scale that measures how acidic or basic a solution or object is.

It ranges between 0 to 14. pH less than 7 or ranging from 0.0 to 6.9 is acidic and more than 7 or from 7.1 to 14.0 is basic or alkaline in nature. A measure of the relative amount of H+ ion and OH- ions in water is pH.

3 0
2 years ago
Blood type is a genetically determined trait. Two siblings donate blood and find out their blood types. The brother is Type A an
rjkz [21]

Answer:

C

Explanation:

The brother has different alleles for the blood type gene than his sister does.  Blood type is inherited from parents like many other traits that can be displayed on a punnet square.  Depending on what the parents blood type alleles were, the brother and sister could have different blood types.  

A different number of chromosomes doesn't lead to different blood types, so D is wrong.  And A is incorrect because the number genes also does not affect blood type.  And I think the blood type genes are on the same chromosome, so B is wrong.  C is correct because blood type is inherited by alleles, and different alleles can cause different traits, such as blood types.  

8 0
2 years ago
Which kind of organism is a autotroph
Deffense [45]

Answer:

Autotrophs are the organisms which have ability make their own food using various sources of energy. Examples are can green plants and algae such as <em>Spirogyra, Chlorella, Volvox</em> make their food using sunlight carbon dioxide and water.  they are photoautotrophs

Some bacteria are also make their food using chemical energy through oxidation. They are chemoautotrophs.  

6 0
3 years ago
Read 2 more answers
What color is an index contouring line usually?
attashe74 [19]

Answer:

hope that helps?

Explanation:

A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function f(x, y) parallel to the (x, y)-plane. In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines.

8 0
2 years ago
Suppose that zonosemata flies whose own wings had been clipped and reattached were attacked more frequently than untreated zonos
umka21 [38]

Answer:

All results for the experimental groups involving wing surgery would be invalid.

Explanation:

The experimental group involving wing surgery would not lead to correct results because it is a direct parameter that is impaired. This has been already clearly stated in the question that these flies are prone to attack compared to those which are not treated. There could be several reasons for that such as: (1) the reattachment would not have been successful, and/or (2) the flies' health (fitness) status would have been compromised.

On the other hand, it is not correct that all experimental groups will lead to incorrect results because the untreated flies were not attacked (or less attacked). Similarly, there is no condition given for houseflies rather only zonosemata flies. So 3rd option is also not possible. Finally, the reliability of the results would definitely change because the treated flies would be more attacked and lead to a clear difference in results.

7 0
3 years ago
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