All of the following are characteristics of igneous rocks except:

a.
igneous rocks are always thin and brittle
c.
some igneous contain vesicules
b.
igneous rocks contain interlocking grains
d.
igneous rock are composed of crystals

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

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

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated