A streamlined body is a body that is shaped to specifically reduce friction drag when moving.
Flippers and flattened tails are used to propel an animal through the water.
A smooth, almost gutless body is light, which is important when animals have to go through water quickly.
A thick layer of blubber is only used for insulation, and would hamper an animal's progress through water due to its weight.
The answer is B. thick layer of blubber.
Answer:
the basic unit of DNA is nucleotide. It is found in the Nucleus:)
Explanation:
Hope this helps:)
1. Frequency
2. Amplitude
3. Wavelength
