Answer: body language and noises.
Explanation:
B is the correct answer because the density it the salts would make the water increase therefore sink faster
The correct answer would be through adaptation and eventually over time they had to evolve to the area around them which made them develop over time to have longer necks .
Answer:
its created when the bacteria reduces the effectiveness of a drug and that drug no longer has a strong effect on it.
Explanation:
it is very bad because they can survive and multiply much more and since they are resistant we cannot get rid of them so medicine wont work against them.