Answer:
Option A, most closely related to mammals
Explanation:
Insects like arthropods and molluscs have an open circulatory system and thus do have a distinguishable heart. Fish has two chambered heart. Reptiles have three chambered heart. Amphibians too have a three chambered heart.
All mammals and fish have four chambered heart. The right and left sides of the chambers have restricted entry and hence remain intact from each other
Hence, option A is correct
Answer:
They became careless and transferred to every body saying i cant all of us has to die
Creating or controlling a situation by causing something to happen rather than responding to it after it has happened.
Biochemistry is the study of the chemical processes occurring in living matter.
