<u>Answer:</u>
Comparing and contrasting embryos of different species is called Comparative embryology.
<u>Explanation:</u>
It is the branch of embryology where embryos of different specie are compared to find out that how two special are evolutionary similar or different from each other. It also helps in the identification of organism's closest ancestor. For example: When Aristotle observed embryos of different animal specie, he described that egg laying (oviparous) organisms are different from birth giving (viviparous) organisms. This has a connection with organism's developmental pattern which tell that both organisms have different or common ancestry.
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Answer:
Small crystals and found in magma chambers! Hope these are correct!
Explanation:
The skin synthesizes a precursor of CALCITRIOL in response to UV radiation in sunlight.
Calcitriol is also called Vitamin D3; it is the hormonally active metabolite of Vitamin D. It is used as drug to treat bone disorder, hyperthyroidism and calcium deficiency.
It's e because it's a long Chain of carbon and hydrogen. It helps the rate of the metabolism allowing to digest quicker in your small intestent.
The half life of Uranium-238 is about 4.5 billion years.
Amount after:
4.5 billion years = 200 atoms
9 billion years = 100 atoms
13.5 billion years = 50 atoms