Q: What is contained in the skin of brightly colored poison dart frogs? Choices: - spores - acid - poison - toxins A:
toxins

Q: The value that occurs most often in a data set is called the? Choices: - median - mean - type - mode A:
mode

Q: Q: What kind of relay occurs between the uterus, hypothalamus, and the posterior pituitary to assure an adequate supply of the hormone oxytocin during childbirth? Choices: - pressure feedback - affirmative feedback - currents feedback - positive feedback A:
A: positive feedback

Question: Q: Every chemical reaction between molecules involves breaking and forming of what? Choices: - orbits - ions - atomic pathways - bonds A:
Answer: bonds

*Question*
Q: What are the layered rocks that form when certain prokaryotes bind thin films of sediment together? Choices: - stalagmites - quartzes - stalactites - stomatolites A:
**Answer**
stomatolites

*Question*
Q: How many eyelid membranes do frogs have? Choices: - two - four - one - three A:
**Answer**
three