Answer:
They contain symbiotic rhizobia bacteria within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil
Answer:
Color is green and sometimes could turn blue when dying. Odor problems can occur with large concentrations of the blue-green algae.
some species are also capable in providing toxins.
Explanation:
Answer: Wind-blown sand grains striking any solid object in their path can abrade the surface. Rocks are smoothed down, and the wind sorts sand into uniform deposits. The grains end up as level sheets of sand or are piled high in billowing sand dunes.
Explanation:
The prevailing wind is the main source of wind and long shore drift causes sand to be deposited.
