Answer: pollen
Explanation: The anthers bear the pollen grains which contains the male gamete(sperm).
I believe the correct answer is B Hope this helps! ^0^
The signs and symptoms of a cluster headache include severe<span> right-sided headache with a runny nose, droopy eyelids, and tearing of the eye on the right side.
</span>The injectable form of sumatriptan<span> (</span>Imitrex<span>), which is commonly used to treat a migraine, is also an effective treatment for acute cluster headache</span>
The answer is litter carbon dioxide bubbles
I hope that helped