They mimicked the flight of birds.
I think its the sea cucumber and sea urchin
but it could be the star too
If calcium carbonate decomposes, the product of the reaction would be calcium oxide and carbon dioxide.
Balanced chemical reaction: CaCO₃(s) → CaO(s) + CO₂(g).
CaCO₃ is calcium carbonate.
CaO is calcium oxide
CO₂ is carbon dioxide or carbon(IV) oxide
Chemical decomposition is the separation of a single chemical compound (in this example calcium carbonate) into its two or more simpler compounds (in this example calcium oxide and carbon dioxide).
Decomposition is reaction where one substance is broken down into two or more simpler substances. Heat is usually necessary to this type of reaction.
More info about carbonate: brainly.com/question/25385913
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Answer:
a. Interference patterns are observed when a wave passes through a barrier with two slits
Explanation:
Interference is a situation where two waves superimpose to form a new wave of a different amplitude. This amplitude can be greater, same or lower.
the diagram attached below shows the movement of a wave through a barrier with two slits.
you can notice the portions of the wave that overlap. This overlapping of waves is the interference.
Thus, option A is correct.
The other options however, are not correct. as shown below:
Option B is wrong as waves exhibit diffraction <em>(it is diffraction of the light wave that produces the rainbows we see in the sky)</em>
Option C is wrong as waves do not travel straight through slits always.
Option D is wrong as waves can also interfere constructively and destructively.