A disadvantage of limitation of correlational research is that: it does not use variables
it uses experimental and control groups
too much math is involved
it does not show cause and effect
it requires the manipulation of the independent variable, random assignment, and control

Which step would a state health department most likely take to reduce lead exposure? promote health-planning operations to limit lead exposure at home. evaluate the number of countries affected by lead exposure. create general national guidelines for working with lead. carry out research on the worldwide effects of lead products.

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

You can add phyisical activity minutes to your day by uising a leaf blower instead of a rake