Bacteria or bacterium is a microscopic single celled simple plants some are harmful and some are helpful. Algae is a simple chlorophyll-bearing organisms lacking true stems, roots, or leaves. Unicellular and multicellular; divided into blue-green algae (similar to bacteria) and all other algae.
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Algae is harmful to people and animals depending on season Seaweed is a type of algae.
Depends.. 95% of all microorganisms are helpful. Most protists are usually helpful.
mold can be helpful and harmful. it really de pends on wat u think
No, algae are not harmful unless it dies. (Found this answer on Yahoo.com)
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Bacteria or bacterium is a microscopic single celled simple plants some are harmful and some are helpful. Algae is a simple chlorophyll-bearing organisms lacking true stems, roots, or leaves. Unicellular and multicellular; divided into blue-green algae (similar to bacteria) and all other algae.
it can be helpful or harmful
sometimes they are helpful and harmful.
Water algae can be harmful but most of them are not... Just dont eat any:) :) lol
Sandpaper is both helpful and harmful.
Bacteria can be both harmful and helpful
they are helpful not harmful to plants
to whom? to what? harmful is a purely subjective term
harmful
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