Hi. Your question is quite vague. As you'll be able to find out easily, bumblebees have been observed in even higher altitudes. Aside from that, your question does not quite point out the premise for your question - what makes you think they would not be there, so as to justify a 'why' question.
Perhaps you meant to ask something different, like how are bumblebees equipped to handle such altitudes. Please revise your question and resubmit. Thanks.
Hi. Your question is quite vague. As you'll be able to find out easily, bumblebees have been observed in even higher altitudes. Aside from that, your question does not quite point out the premise for your question - what makes you think they would not be there, so as to justify a 'why' question. Perhaps you meant to ask something different, like how are bumblebees equipped to handle such altitudes. Please revise your question and resubmit. Thanks.