Which of the following is true of chronic stress in human beings?
a. it is temporary.
b. it may lead to persistent autonomic nervous system arousal.
c. it involves excessive activity of the parasympathetic nervous system.
d. it is adaptive.

The biome pictured above is found in areas such as kenya and south africa. the land is grass-covered with very few trees and gazelles and other grazers are common here. why does this biome have a low population of trees? a) large grazing animals destroy the trees. b) it is a deforested rainforest with poor soil. c) it has high temperatures and low precipitation. d) it has a long rainy season followed by flooding.

If a system of linear equations has the unique solution (2, −3), then its graph consists of what? parallel lines lines that intersect at a single point identical lines a y-intercept at −3

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