Although more offsprings are produced by the process of external fertilization but the process of internal fertilization is more efficient as compared to external fertilization. This is because, in external fertilization, it is more difficult for the sperm to find the egg and fertilize it. Even after fertilization, it might be that the zygote gets eaten up by a predator. There are none such risks in internal fertilization. The zygote is protected during the internal fertilization which makes this process more efficient.
<em>Blood is the primary transporter</em> mode for the transport of components essential for digestion all through the body
Red platelets are one of the most significant components of blood
Red platelets (rbcs)transport oxygen to the body's tissues and trade it for carbon dioxide which is carried to the lungs for elimination
Red platelets are shaped in the bone marrow of Stem cells in the red bone marrow called hemocytoblasts offer ascent to the entirety of the formed components in blood
