<span>The answer is, C. Antibiotics are often ineffective in treating older people who have deficient immune systems
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Mountain chains match up where South America collided with Australia to form Pangaea.
The major cause of staghorn corals decline is, that some organisms in the same aquatic environment affect them negatively and harm them a lot.
<h3>What do you mean by Corals?</h3>
Corals may be defined as marine invertebrates organisms that are composed of colonies of skeletons underwater bodies.
Staghorn is so vulnerable because its branches are so fragile and break by any disturbances. This causes the staghorn to ultimately disintegrate and die.
Therefore, it is well described above.
To learn more about Staghorn corals, refer to the link:
brainly.com/question/11632069
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Answer:
The answer is the 3rd option.
Explanation:
This is because option 1 and 2 don't make sense and the 4th option if you count lll. has 4 elements where l. has 3 elements.
