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:
Phalanges: long bones
Sternum: flat bone
Vertebrae: Irregular bone
She is clearly denlmostrating xenophobia or discrimination from where you are from
Answer:
The new amino acid may be the same as the original amino acid or it may be different.
