If salamanders have a relatively complex circulatory system with a three-chambered heart, then which animal has a circulatory system with a three-chambered heart? Answer choices: - animals - Salamander - fur seals - mammals - alpacas - a fish - warm-blooded - barnacles
Salamander

If killing bacteria in food can be used to extend the shelf life of that food, then bacteria can be killed to extend the shelf life of what? Answer choices: - milk - rocks - coffee - edible - food - phytoplankton - influenza - tuna
food

Q: If flowers are specialized organs, then what are specialized organs in plants? Answer choices: - potatoes - breathing - Epidermis - alveoli - PDAs - flowers - epidermal - genus
A: flowers

Question: If recycling reduces pollution when making something, then recycling reduces what when making something? Answer choices: - fossil fuels - pollution - Energy. - less water - power - energy - Heat energy - deforestation
Answer: pollution

*Question*
If exercise increases flexibility and muscle tone, then what helps increase flexibility and muscle tone? Answer choices: - movement - hydration - fitness membership - fats - hypertrophy - arteries - exercise - Proteins
**Answer**
exercise

If clothing can have an impact on the effectiveness of sweating to cool the body, then what does taking off one's clothing improve the efficacy of? Answer choices: - recovery - hydration - Sweating - Modesty - Waterproofing - Exfoliation - Honesty - staying warm
Sweating