Venous anastomosis (or some people call it circulatory anastimosis) ia a connection between two blood vessles, such as between arteries and veins.
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(Its not a big answer but i really hope this is the answer you are looking for)
Answer: The first and the fourth figure is showing the two stages of metamorphosis in beetle. The first figure represents the adult stage of beetle and the last figure represents the larvae stage of beetle. Metamorphosis is the biological process by which an organism goes through differentiation of cells. As a result of this differentiation the structure of the organism changes from one to another. There are four stages egg, larvae, pupa, adult.
The second figure shows regeneration in cnidaria. They repair their body and reproduce asexually by this process. They show two stages polyp and medusae. Medusae have less ability to regenerate but poly stage can regenerate from small parts. This ability helps corals to heal back after being destroyed by predators.
The third figure represents cow and this is an unique feature of mammals to produce milk by their mammary gland. During the lactation period the cow produces milk that is used by cattle and human beings.
That process is called active transportation.
Answer:
four billion years ago the earth had a layer of ozone gas
Answer:
Explanation:
all the fresh water on the earth are present only in 3 percentage,in the form of glaciers and ice capes.so if this ice melts then they get mixed with the salty water.which will result in the of depletion of the fresh water present on the earth.
