TY  - BOOK
AU  - Bierer, Loretta M.
AU  - Lien, Violetta Fisher
TI  - Heath life science.
SN  - 0669051489
AV  - QH308.7.B58 
PY  - 1984///
CY  - Toronto
PB  - D.C. Heath and Company
KW  - Biology
N1  - Includes index; Contents: Introducing life science -- Life -- The simplest living things -- Environment and life -- The simplest plants -- Kinds of higher plants -- Plant function -- Ecology -- Sponges and hollow-bodied -- Worms -- Mollusks and spiny-skinned -- Arthropods -- Water ecosystems -- Cold-blooded vertebrates -- Warm-blooded vertebrates -- Animal behavior -- Protecting the environment -- Reproduction and development -- Genetics -- Changes over time -- Support and movement -- Digestion and circulation -- Respiration and excretion -- Health and the environment --
ER  -