Erosion commonly occurs following conversion of natural vegetation to agricultural land – carrying away fertile soil as well as fertilizers, pesticides and other agrochemicals.
The cross will results into the following genotype -
Pp X Pp
PP, Pp, Pp, pp
The purple genotype among the following are -
PP, Pp, Pp
Answer:
the cup like opening becomes the mouth in placental mammals, including humans.
I think one major difference with that is that animals can move around, go distances in search for food or mate, and thus make the animal densities per geography vary greatly. Birds migrate regularly, so their population densities tend to vary with seasons. Their mobility also depends on the availability of food, so animals go away if there are no food in the area.
Plants on the other hand don't move around faster (they can migrate by reproduction: it's their seeds moving around). Thus their densities tend to be more constant per season/life cycle.
brain is the organ which does play a role in mechanical or chemical digestion
