Q: What does the kelvin scale measure? Choices: - height - oxygen - precipitation - temperature A:
temperature

Q: Systemic veins return blood low in what to the right atrium? Choices: - dioxide - nutrients - nitrogen - oxygen A:
oxygen

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

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

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

Q: Q: What are the three types of symbiosis? Choices: - connectionism , parasitism , commensalism - commensalism, osmosis, internalization - internalization , parasitism , commensalism - mutualism, parasitism, commensalism A:
A: mutualism, parasitism, commensalism