Q: What mammalian feature serves functions such as filtration and keeping the body warm? A:
OPTIONS:
- shivering
- sensory organs
- sweat
- hair
hair

Q: What is the energy needed to start a reaction between catalysts and reactants called? A:
OPTIONS:
- reaction energy
- decomposition energy
- conductivity energy
- activation energy

Answer: activation energy

Question: Q: The action of sunlight on the skin triggers the body to produce what vitamin? A:
OPTIONS:
- Vitamin A
- metabolic d
- tissue d
- vitamin d
Answer: vitamin d

input with options: Q: Ions are charged what? A:
OPTIONS:
- molecules
- protons
- isotopes
- atoms
output: atoms

Q: Q: The bones of the skull are connected by what type of joints? A:

OPTIONS:
- semi-mobile
- pivoting
- adjustable
- immovable

A: immovable

Q: When an unstable nucleus emits radiation and is transformed into the nucleus of other elements this is called? A:
OPTIONS:
- naturally decay
- explosive decay
- fusion decay
- radioactive decay
radioactive decay