Q: Sounds or pictures can be encoded in pulses of what, which are then sent through an optical fiber? Choices: - kinetic energy - microwaves - quasars - laser light A:
laser light

Q: A reference point is used in measurement to make what? Choices: - deviation - focal point - regression - estimation A:
estimation

Q: Q: What is a primary source of the hormone melatonin? Choices: - thymus - pituitary gland - thyroid gland - pineal gland A:
A: pineal gland

Question: Q: What type of metal is a good conductor of electricity? Choices: - Tin - Aluminium - zinc - copper A:
Answer: copper

*Question*
Q: What concept can be applied to biology, because the structure of an organism, or part of an organism, depends on its function? Choices: - motion follows function - attachment follows function - form follows use - form follows function A:
**Answer**
form follows function

(Q).
Q: Paint keeps oxygen and water from coming into direct contact with the metal, which prevents what? Choices: - heat - evaporation - filtration - corrosion A:
(A).
corrosion