multiple choice 10 points
the earth itself is roughly ___ years old.
○ 4.5-4.6 billion
○ 3.5-3.6 billion
○ 5.5-5.6 billion
○ 2.7-2.8 billion
43 multiple choice 10 points
a snail belongs to class
○ gastropoda
○ cephalopoda
○ polyplacophora
○ bivalvia
44 multiple choice 10 points
a hydra, anemone and a jellyfish all belong to what phylum

Question

Accepted Answer

### Question 1 (Earth's age):
# Brief Explanations:
Scientific consensus states the Earth is approximately 4.5 - 4.6 billion years old.
# Answer:
A. 4.5 - 4.6 Billion

### Question 2 (Snail's class):
# Brief Explanations:
Snails are part of the Class Gastropoda in the phylum Mollusca. Cephalopoda includes octopuses, Polyplacophora includes chitons, and Bivalvia includes clams.
# Answer:
A. Gastropoda

### Question 3 (Hydra, Anemone, Jellyfish phylum):
(Assuming the options include Cnidaria, as these organisms belong to Phylum Cnidaria. Since the options are cut off, but based on knowledge: Hydra, sea anemones, and jellyfish are in Phylum Cnidaria.)
# Brief Explanations:
Hydra, anemones, and jellyfish are all cnidarians, belonging to Phylum Cnidaria (characterized by stinging cells, radial symmetry, etc.).
# Answer:
(If options have "Cnidaria" as a choice, e.g., if the option was, say, "C. Cnidaria", then the answer would be C. Cnidaria. Since the options are not fully visible, but based on the question, the correct phylum is Cnidaria.)

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QUESTION IMAGE

Question

Explanation:

Question 1 (Earth's age):

Answer:

Question 2 (Snail's class):