Which layer of the blood vessel is responsible for vasodilation and vasoconstriction?

In dunker's candle experiment, subjects weren't able to find a solution to the candle problem because they could not see past the conventional use of the box. which obstacle to problem solving did the subjects experience? (2 points) functional fixation counterproductive heuristic confirmation bias overconfidence

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.

The following table lists the birth rate, death rate, and net migration rate for egypt over the past 20 years. on a coordinate plane, plot the birth rate data and death rate data for egypt. clearly, show each data point and label each curve. be sure to label the graph and axes. save a copy of your graph. then answer the following questions: (14 points) a. what was the annual growth rate for egypt in 1990? what is the estimated annual growth rate in 2010? be sure to show your work for each answer. b. where does egypt most likely fall on the demographic transition model? explain your answer using data from the table. describe two changes within egyptian society that would likely be necessary for egypt to transition to the next stage in the model. c. assuming egypt’s current birth rate, death rate, and net migration rate trends continue, what will the country’s annual growth rate likely be in 2030? if this growth rate is accurate, what would its doubling time be in 2030?