are vents in lava, or pyroclastic flow, that allow gases to escape. A)
Lahars
B)
Tsunamis
C)
Tephras
D)
Fumaroles
E)
Windbreaks

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?