Answer:
B
Explanation:
Divers who dive at any time from sunset to sunrise must carry a diver's light visible when above the water for a distance of 150 feet.
Answer:
They built them on hills.
Explanation:
Of course, they did this to create a natural defense from the attack of foreign invaders. For example, the city of Rome itself was built on seven famous hills. Of course, through time they tried to fortify them as much as possible, but the main defense laid on the physical location of those cities.
Answer:
Peasants and nobles in the middle ages were very different from each other. Peasants lived a life of working hard to get things, while nobles were gave what they wanted. Peasants had to farm and work all day to get food for their families.
Explanation:
Answer:
Poisonous foods can be detected by the bitter taste receptors.
Explanation:
The tongue has various taste receptors, which detect the 5 tastes:
- Sour
- Salty
- Sweet
- Bitter
- Umami
Since most poisons are bitter, they are easily detected by these taste receptors. This taste has evolved in order to keep individuals safe from poisoning themselves and surviving.