Two mountain ranges, the Alps and the Apennines, helped to protect Rome from invasion. ... Any army attempting to attack Rome would be at risk of attack from the other side of the mountains. The Alps, located on the northern border of modern-day Italy, seal off the peninsula from the rest of Europe during winter.
The answer is neutral stimulus; conditioned stimulus. A neutral
stimulus is a spur which originally makes no exact answer
except concentrating responsiveness. In classical conditioning,
when put together with an unconditioned stimulus, the neutral
stimulus turn out to be a conditioned stimulus.
The correct answers are A& B.
Nonverbal communication is how we communicate or express feelings without actually saying something. Rolling your eyes at someone is an example.
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Answer:
Birds’ feathers are designed to be light but very strong, flexible but very tough. Although it looks like feathers grow all over a bird, they actually grow in specific areas called feather tracks. In between the feather tracks are down feathers. This keeps the body weight down.
Feathers are made of a tough and flexible material called keratin. The spine down the middle, called the shaft, is hollow. The vanes are on the two halves of the feather. They are made of thousands of branches called barbs. Because there are many spaces between these barbs, a feather has as much air as matter.
Explanation:
