Answer: 2
Explanation: There's X (female) and Y (male).
They are both involuntary
Answer:
hope it helps
Explanation:
Cooler materials move from Earth's mantle to the lithosphere. Cooler materials are highly dense, causing them to sink to the outer core.
Explanation:
BB=Brown as both are big B's
Bb=Brown as there is a big B
bb=Blue as both are little b's
Answer:
The life cycle of plants is composed of sporophye generation and gemetophyte generation. They show alternation of generation in which gametophytr produce gametes that develop into sporophytic plant. Sporophye produce spores that develop into gametophyte plants.
Example:
Bryophytes, pinus etc
