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Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs, and have no body symmetry.
The shapes of their bodies are adapted for maximal efficiency of water
flow through the central cavity, where it deposits nutrients, and leaves
through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are sessile
aquatic animals. Although there are freshwater species, the great
majority are marine (salt water) species, ranging from tidal zones to
depths exceeding 8,800 m (5.5 mi).
Answer:
I think it is A loss of biodiversity.
Explanation:
Sorry if it is wrong.
B) Most metals conduct heat readily. In pure elemental forms, they
neither have basic or acidic properties. Other properties include
malleability, high melting points, high densities, and electric
conduction.
Easy. A hybrid is literally a crossing of two things. A hybrid is a blueprint (genetic instructions) ready to be build.
If you can remember the hybrid and blueprint part I'm pretty sure you'll get it.