Answer:
The correct option is A. they evolved from land mammals.
Explanation:
Evolution can be described as a process through which organisms in a species change over a period of time due to the natural selection of the environment. Those organisms that have many similarities in their functions or structures are considered closer to one another and have the same common ancestors.
The properties mentioned in the question about cetaceans resembles the properties of land mammals. For example, cetaceans lack gills and breathe air. Land mammals also do not have gills and need to respire for living. The cetaceans have fin bones which are similar to the limb bones in the land mammals. Hence, these observations show that cetaceas have evolved from land mammals.
Cercel ben Türkçe biliyorum İngilizce ama ben de seni çok seviyorum seni çok teşekkür ederim canım ben Türkçe konuşuyorum o zaman sen daha açıklayıcı oldu teşekkür ederim canı
What type of rock forms when magma cools?
A. Limestone
B. Metamorphic
C. Sedimentary
D. Igneous
m
Answer:
Protists are eukaryotic organisms that can be unicellular, colonial, or multicellular. They are called Archaea, a separate kingdom (even a separate domain). Almost everywhere like earth's crust, organic matters, water bodies, bodies humans and animals and so on. Archaea inhabit nearly every environment on earth, but no archaea have been identified as human pathogens. Unicellular: Archaebacteria, Eubacteria and Protista.
Explanation:
The nucleus is a membrane enclosed organelle found in most eukaryotic cells,which stores the genetic material .
Answer: Mitochondria
Explanation:
Mitochondria are rod-shaped organelles bounded by a double membrane in which the inner membrane is folded and filled with matrix. Mitochondria is present in both plant and animal cells, and serves as the power house where respiration occur and energy is released from the oxidation of simple sugar.
