Which THREE characteristics do mechanical waves and electromagnetic waves share? A. The waves transfer energy from its source.

B. The waves begin with a disturbance.

C. The waves and their energy move outward from the source.

D. The waves and their energy can travel through empty space.

A, b, and d

Ik that it’s right

The answer is A B D

Explanation: I just did it and i got it right

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organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high