Why wouldn’t all of the new varieties of the pioneer plant survive in each new Niche

Explanation:

Pioneer species are the first species to colonize a particular barren land that has been existing before but distrupted by activity such as fire. Example are lichens and lime grass.

When pioneer species are introduced into a new niche it takes time for them to get adapted to their new environment. During those period of them trying to fit into the new niche some of this plants may be lost with time reducing the population. Also, pioneer plants are mostly photosynthetic when some factors that favors photosynthesis such as temperature, light, Co2 concentration are not available there would be reduction in the pioneer species.

Competition between the old and new species may reduce it population if the old plant out compete them.

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)

it should discride this whale so it shouldnt be that hard