Blood is considered to be a tissue and it is part of the circulatory system.
The human circulatory system functions to transport blood and oxygen from the lungs to the various tissues of the body. The heart pumps the blood throughout the body. The lymphatic system is an extension of the human circulatory system that includes cell-mediated and antibody-mediated immune systems.
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The aboveground biomass of the boreal forests is high because these very slow-growing tree species are long-lived and accumulate standing biomass over a good amount of time. Species diversity is smaller than that seen in temperate forests and most tropical rain forests.
Explanation:
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The answer is most likely "stanza". In poetry, lines are arranged in stanzas to separate them in a similar way that paragraphs separate groups of sentences.
Gymnosperms were the first seed plants. They do not make flowers or fruits, so their seeds are unprotected, hence the name gymnosperms which means "naked seed".
These seeds are wind-dispersed pollen that doesn't need water for fertilization.
