Answer:

Explanation:
Consider the small sphere radius is x1.
therefore the large sphere radius is 3x1
As we know that volume of sphere=
So ,
Volume of the small sphere
=
also Volume of the large sphere
= 

On solving the equation
volume of large sphere=27 * volume of small sphere
Hence 
Protists are least similar to bacteria because all the others are eukaryotic cells. Bacteria are prokaryotic.
Research suggest that the combined length of the small and large intestines is at least 15 ft in length. The small intestine can measure about 9-16 ft while the large intestine is roughly 5ft long.
Answer:
Option (A).
Explanation:
Evolution may be defined as the change in the characteristics of a species over several generation with time. Natural selection acts as a main drivinf force for the evolution.
The drought of 1977 is responsible for the species evolution. The species is larger in this case (as mentioned in the question) and the species has deeper beaks over time. The birds have relatively large and deep beaks because they can easily crack the food.
Thus, the correct answer is option (A).