If xylem tissue is plugged by gum, what other substances are prevented from traveling up the stem?

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

Archaebacteria use for movement. celia flagella pili cell walls

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian