Contour plowing. this helps with soil erosion and use full use of rainfall
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Heterocyst-forming cyanobacteria differentiate highly specialized cells to provide fixed nitrogen to the vegetative cells in a filament. In the presence of a source of combined nitrogen such as nitrate or ammonium, Anabaena PCC 7120 grows as long filaments containing hundreds of photosynthetic vegetative cells.
<span>Mutations generated in a species gene pool important because mutations cause evolution.</span>
Answer:
Wangsulan Iku Soko sing KITA ORA SING MELU SAK GROUP
