Ajar contains colored stones that are 4 pink stones, 9 orange stones and
5 green stones. ryan picks one stone, records its color and puts it back in
the jar. then he draws another stone. what is the probability of taking out
an orange stone followed by the green stone?

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

The structure that houses the cells genetic information.

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.