The primary function of red blood cells is to carry oxygen from the lungs to the body tissues and carbon dioxide away from the tissues and back to the lungs.
Biotic factors are the living components of an ecosystem. They are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.
Answer:
chick
Explanation:
it has feathers and lays eggs
The correct answer is b. ecosystem. An ecosystem refers to the living and non-living factors in a particular area. The living organisms like bacteria, animals and plants are the biotic factors and the non living components like soil and water are the abiotic factors.
