Cell theory does not state that
a. all organisms are made of cells
b. all cells are exactly the same
c. cells come from other cells
d. cells are the basic unit of life
(i know its not d)

voluntary muscles are controlled by the cerebellum.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.