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NeX [460]
3 years ago
14

20 POINTS!

Biology
2 answers:
Helga [31]3 years ago
6 0

Answer:

A element can be identified by the properties it has, so true.

Wewaii [24]3 years ago
4 0

Answer:

true

Explanation:

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PCR (polymerase chain reaction) is an excellent method of generating copies of target DNA. If a single piece of double stranded
enyata [817]

Answer: After 3 rounds, 8 segments having 2 original strands on different segments will be present.

Explanation:

The polymerase chain reaction selectively and repeatedly copy the double stranded DNA (dsDNA) in the PCR machine.

1st round:

Single piece of double stranded DNA (dsDNA) unwinds in two seperate strands, before complementary nucleotides are synthesized to establish double helix.

2nd round:

The two dsDNA yields 4 segments before complementary nucleotides are synthesized

3rd round:

The four dsDNA yields 8 segments before complementary nucleotides are synthesized.

Therefore, at the end of 3 rounds, the two original strands will be present on the 8 different segments of copied DNA.

8 0
3 years ago
Part of the plant where photosynthesis generally occurs
icang [17]

Answer: Leaves

Explanation:

Photosynthesis takes place in things called chloroplasts. Chloroplasts contain a green substance called chlorophyll. Most of these can be found in the leaves of the plant.

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3 years ago
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Geography the process in which nutrients are dissolved in water and percolate downward below the root zone of crops is called:
Karo-lina-s [1.5K]
Nutrient Leaching

Leaching is the process where dissolved nutrients in the soil profile moves downward with percolating water. It is the loss of water-soluble plant nutrients from the soil. The nutrients that seep through the rooting zone may be recycled if roots grow deeper.


6 0
4 years ago
Importance of platyhelminthesis​
Irina-Kira [14]

Answer:

The phylum platyhelminthes includes the organism like flatworms, earth worm and many other species. They play a major role in the marine, terrestrial and freshwater ecosystem. It contains a variety of nutrient sources.

Explanation:

They are of great importance from the times when there were no other organism.

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Artificial selection has been used by humans to
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Answer:

Its been used by humans to take the best traits from a species and pass them on like bigger bodies in cows for more meat and bigger muscles in horses for faster racing potential.

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