Answer:a stationary front.
Explanation:
they allow repeated thunderstorms to move across the same area.
Answer:
a b e
Explanation:
these are all pros of living in groups
Answer:
Nitrogen-fixing bacteria is capable pf transforming nitrogen present in the atmosphere into fixed nitrogen i.e. usable for plants.
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There doesn't seem to be a maximum number. Ultra high molecular weight polyethylene has around 500 thousand carbons that are linked together.