In 1968, Brezhnev ordered the soviet army and troops of other eastern European nations to crush a liberal communist regime in : B. Czechoslovakia
He ordered about 500,000 troops to invade Czechoslovakian Borders using the Blitzkrieg approach
hope this helps
Multiply by the power of the eyepiece, usually 10x.
Answer: The correct option is D(Some produce toxic agents in the water).
Explanation:
Dinoflagellates are found in the phylum Dinoflagellata which are single celled organisms. They are mostly found in the ocean while few of them can live in streams, freshwater ponds and rivers. The following characteristics can be used to identify a Dinoflagellates, these include:
--> they are golden brown
--> they possess assimilative cell with indented waist.
--> they possess large nucleus with visible chromosomes.
It has been reported that many dinoflagellate species can produce various natural toxins. These toxins can be extremely toxic and many of them are effective at far lower dosages than conventional chemical agents. Therefore the option, Some produce toxic agents in the water, is a correct statement.
