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drek231 [11]
3 years ago
14

When we talk about soil depletion, which soil horizon are we talking about? Thank you

Biology
1 answer:
xz_007 [3.2K]3 years ago
8 0

Answer:

Surface Horizon (A)

Nutrient depletion of soils is a widespread soil degradation phenomenon that occurs as a consequence of soil erosion<u> (it is the topsoil in which generally most soil nutrients are present that erodes fastest) </u>but also because of poor management practices, such as slash and burn and other subsistence agricultural.

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What is the importance if the carbon and nitrogen cycles to ecosystems
Aliun [14]

Carbon and nitrogen and an important element of living things. Nitrogen is a major component of DNA and amino acids while carbon can be found in almost all biomolecules. These elements, therefore, need to be renewed and recycled as they are utilized by ecosystems that is ever dynamic.  

8 0
3 years ago
An animal from a warm climate is placed into an environment with a cold climate.
Inessa05 [86]

Answer:

Probobly The animal will probably not survive because it does not have

adaptations for that environment.

Explanation:

6 0
3 years ago
What is the dependent variable in this statement? " Pools with dark pool tile heat up faster (i.e., have a higher temperature) i
Paha777 [63]

Answer:

temperature

Explanation:

5 0
3 years ago
What is ATP?. What does it do?. How do organisms get ATP?.
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7 0
3 years ago
Which of the following statements regarding restriction enzymes is NOT true?
Anni [7]

Answer:

The correct option is option A

Explanation:

Restriction enzymes are endocleases that cleave DNA fragment (<u>of usually four, five or six nucleotide long</u>) at <u>specific sites to produce blunt or sticky ends</u>. They <u>recognize palindromic sequences of host DNA when cleaving the specific sites</u>. The sequences below (on complementary strands) give an example of a palindromic sequences.

5'-CCC║GGG-3'

3'-GGG║CCC-5'

As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.

5'- G║AATTC -3'

3'- CTTAA║G -5'

The explanation above shows options C and D are right while option A is wrong (hence the correct option).

Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites <u>which prevents restriction enzymes from recognizing restriction sites of their DNA;</u> this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.

6 0
3 years ago
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