When a child develops challenging behavior a. pay little attention so the child will tire of acting out. b. let the family know that they need to deal with it. c. listen to what they child says. d. keep the child out of the group.

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome

To test the responsiveness of the kidneys, scientists have designed an experiment tracking urine output of people during a normal day, while regulating the in-take of water by mouth. what would be an appropriate hypothesis for this experiment?