Answer:
Explanation:
An archegonium (pl: archegonia), from the ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium.
Answer:
Explanation:
From the question we are told that
2 species
Assuming that questions a and be are solved
Diversity index D=2p_1p_2
with 
Mathematically



Therefore

Giving

The rapid release of air/ gas bubbles during cooling
17) cerebellum
18) temporal lobe
iam sorry about the others their answers are not in the paragraph