B. tissues
C. organs
D. organisms
Answer : The correct answer is -
B. tissues.
Tissue can be described as the group of similar cells that are clustered together to perform specific functions.
For example- Nervous tissue is made up of nerve cells (also called neuron) that help in the transmission of electrical signals throughout the body.
Thus,option B) tissues is the right answer.
Geology, Oceanography, Meteorology, Astronomy, are the four main branches. these are the studies of the
B) adaptive radiation.
C) warning coloration.
D) protective resemblance.
Answer: The correct answer is Adaptive radiation.
Adaptive radiation can be defined as the diversification of organisms having common ancestor that later on become adapted to different environmental conditions.
Due to different environmental conditions, these organisms evolve and become diversified to more specialized types.
For instance, Darwin's finches on the Galapagos islands evolved with different beak types ( like drilling, cracking, tearing, and fishing) due to availability of different types of food.
Therefore, they are example of adaptive radiation.