Biology

How many main kingdoms are there in the living world?

More Questions from Biology
What takes up 50-70 percent of a whale's weight?
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What are the two kinds of blood cells?
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What is an algal bloom that occurs in salt water called?
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Which of these is an example of a jawless fish?
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What is the study of interrelationships of animals and plants to their environment?
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Where does the zygote of a gymnosperm develop?
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Which of these is a sense that humans are known to have?
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In what season do the leaves of some trees turn colors and start falling to the ground?
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