Which statement about electric and magnetic fields is true?

A. Electric fields and magnetic fields loop from north to south.

B. Electric fields must leave a positive charge and end on a negative charge.

C. Electric fields and magnetic fields start at a postive and end at a negative.

D. Magnetic fields must start at the north pole of a magnet and end at the south pole of a magnet.

D. ) Magnetic fields must start at the north pole of a magnet and end at the south pole of a magnet.

Explanation:

I took the quiz and got this right :)

Good luck to all future comers...

<3

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602