Answer:
Any two other subcellular structures that can be found in an animal cell are:
nucleus.
mitochondria
The vocabulary is difficult.
The anatomical structures (dorsal, ventral) are not always easy to determine.
Some of the pictures did not show all aspects or key features of the organism.
Some specimens were very similar.
There were lots of questions and it seemed to take a long time to narrow them down.
All cetaceans exhibit similar surface behaviour like breaching,spy hopping,spouting etc..they are huge mammals who live in marine water.they live as a family
Answer:
They maintain their body temperature higher than their environment by some metabolic processes like contraction of muscles, friction produced by flow of blood etc. They have a higher basal metabolic rate, and also a greater capacity to increase their metabolic rate.
