Which of the following is an example of homeostasis?
a. talking
b. breathing
c. laughing
d. sitting

When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page

Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry

Add solid urea to a beaker of water. the beaker gets very cold. is δh favorable or