Instead of having roots and leaves, molds grow as thread-like filaments called
cilia
spores
hyphae
flagella

The correct answer is -

Hyphae.

Mold can be described as a fungus, which primarily grows in multicellular filaments that is threadlike form, called hyphae.

In most of the fungi, hyphae are considered as the main mode of vegetative growth, and together they are termed as mycelium.

Thus, Hyphae is the right answer.

ocean expansion, global warming is melting icebergs and causing water levels to rise.

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