About 1.5 million species of fungi exist on Earth. They act as nature’s decomposers, breaking down matter, releasing enzymes and acids that unlock nutrients for plants and soil organisms. You may be familiar with macro-fungi, a type of fungus that includes mushrooms. But for the most part, fungi exist as mycelia, tiny threads that snake underground in billions of interconnected threads. They twist and twine with tree root systems, bringing them crucial nutrients. Mycologists call these networks of mycelia "Earth’s nervous system." Which statement best identifies the central idea of the paragraph? A. The over a million different types of fungi surrounding us act as Earth's decomposers. B. The type of fungus called macrofungi includes mushrooms. C. Fungi exist as a web of threads connected underground. D. Fungi bring nutrients to tree root systems when they twine with them underground.

The over a million different types of fungi surrounding us act as Earth's decomposers.

Explanation

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1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)