What was the most important adaptation of the reptiles and birds to life on land?  

A.  the shelled egg
B.  the amniotic egg
C.  the external egg
D.  the impermeable egg


B.  the amniotic egg

Biology & Microbiology

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When sugar dissolves in water, water is acting as a ____ and the sugar molecules are acting as ____

a. solution; solvents b. solute; solutions c. solvent; solutes d. solute; solvents e. solvent; solutions

Biology & Microbiology

Why is it wiser (ecologically and economically) to eat a diet with more plants in it than one with more meat?

What will be an ideal response?

Biology & Microbiology

A solution with a pH of 4 has ________ the concentration of H+ present compared to a solution with a pH of 5.

A. 2 times B. 10 times C. 100 times D. 1000 times

Biology & Microbiology

The ascending tracts of the spinal cord are responsible sensory and motor functions of the peripheral nervous system that control the skeletal muscles.

Answer the following statement true (T) or false (F)

Biology & Microbiology