It should be gas exchange. that the carbon dioxide is breathed out and breathing in of oxygen
Answer:
Option (a).
Explanation:
Phylogentic tree may be defined as the the diagrammatic representation of the evolutionary relationship of the organism. The phylogenetic trees are made on the hypothesis and do not explain any fact.
The branching in the phylogenetic tree determines the evolution of the species from the common ancestor. The common ancestor is located at the base of the phylogenetic tress. Since, Ardipithecus ramidus is located at the base it shows that Ardipithecus ramidus is a common ancestor.
Thus, the correct answer is option (a).
Sciatica muscle imbalance is a diagnosis often made by chiropractors<span> and </span>physical therapists<span> to explain sciatic nerve pain which is not caused by the usual suspect spinal abnormalities. Since the muscles involved are not spinally-located, the expression produced should actually be called pseudo-sciatica, since true sciatica is defined as pain which is sourced within the vertebral column exclusively.</span>
Analogy, in biology, similarity of function and superficial resemblance of structures that have different origins. For example, the wings of a fly, a moth, and a bird are analogous because they developed independently as adaptations to a common function—
THis is the link i used
flying.https://www.britannica.com/science/analogy-evolution