By looking for the presence of the germ layers and the primitive gut in the embryo
Answer:
2, phenotype
traits are determined using genetics
Explanation:
Melanin is the pigment which absorbs UV light and it is present in skin and gives black colour to it.As we can see africans usually have black skin as they have to face direct uv light.
Answer:
autotrophs!
Explanation:
plants produce their own food!