Answer:
I'm presuming you mean the three different subcatagories or taxa as there around 25/26 mammalian orders. The three taxa are - Prototheria or Monotreme = Mammals that lay eggs Metatheria Marsupial = Mammals with external development pouches.
Explanation:
First law is Law of Conservation of Energy it states that enegy cant be made in a isolated system. The second law is Law of Thermodynamics it states that the entropy of any isolated system always increases.
It adds bases in only one direction.
Ofcourse, <span>Cone-bearing plants</span>
B. Sunlight doesn't reach the bottom of lakes..
