Answer:
U-boats were used primarily to -gather information about enemy movements by tracking warships. -protect the German coast from attack by Allied ships and submarines.
Answer:
Wheels
Explanation:
A lot of things use wheels and are made from them today, help with construction, transportation, etc.
Answer:
I guess it's b but I'm thinking A
Chromosomes are the rod-shaped portion of DNA
Answer:
The unconditional response is to strengthen the immune system as a result of ingesting the drug placed in the water.
Explanation:
Unconditional response is the name given to a response, given by the organism, which occurs as an automatic result of an unconditioned stimulus. An unconditioned stimulus, in turn, which is a stimulus that causes responses in the body.
In this case, we can see that the unconditioned stimulus is water sweetened with a drug that strengthens the mice's immune system. In this case, if the rats consume this water, their immune system is automatically strengthened, and this strengthening is the unconditional response of the experiment.
