Summarize the good and bad aspects of adding Nitrogen to crops (using 1-2 sentences)

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f о

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.

Which degree of tilt produced light similar to what north america experiences in summer? explain your answer?