Without a control group there wouldn’t be any basis for knowing if a result is due to the variable being tested
I believe the correct answer is C. Nektons include bony fish and squid.
15 years for scientist to classify an area's weather as its climate.
Answer:
The three basic types of adaptations, based on how the genetic changes are expressed, are structural, physiological and behavioral adaptations. Most organisms have combinations of all these types.
Explanation:
Living things are adapted to the habitat they live in. This is because they have special features that help them to survive. The development of these special features is the result of evolution due to gene mutation. These mutations aid in the survival and reproduction and passes on from one generation to the other.