Salts are excluded from ice as seawater freezes at the surface of the ocean.
Answer the following statement true (T) or false (F)
True
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Formation of new organic matter through photosynthesis by producers is referred to as ____
a. net production b. gross production c. secondary production d. primary production
Pollution prevention is a key strategy for implementing
A. an epidemiology study. B. REACH. C. risk analysis. D. biohazards standards. E. the precautionary principle.
A thin math book and a thick science book are joined by a string on a horizontal friction-free table. One book is pushed off the edge of the table. As it falls, the other book (different mass) is dragged horizontally across the table surface. Acceleration of the books is
A. between zero and g. B. g. C. zero. D. g/2. E. greater than g.
When hydrogen is burned as a fuel, the primary waste product produced is ________
A) carbon monoxide B) H2O C) hydrocarbons and CO2 D) CO2 and H2O E) CO2