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:
secondary consumer
Explanation:
They are the least because they play a less important role in the ecosystems.
Answer:
Clean air and water are limited resources. ... The conservation of natural lands and of working farms and forests can generate financial returns, both to ... In addition to health and food benefits, conserving land increases property values near ... and the creation of trails and parks are often viewed in terms of their costs.
Explanation:
Hope that helped
