[□=□] □
[tag=□] □
[word=□] □
In a complex way , scientists speculate , cold temperatures may prevent oxygen components from damaging cells that control brain function . Do not be frustrated by the establishment and the institutions and leaders that control the society you will join . Because arriving at this conclusion requires several steps of logical thought and disagrees with the selfish instincts that control most gas-pedal-feet , it never occurs to most drivers . The general level of concern and understanding , she suggests , cannot touch flit primitive feelings that control human life . In the resources sections below , growers are provided with a list of biological control suppliers ; and tables that summarize biocontrol agents and biorational pesticides that control aphids .