Don’t fall for the links love!
I had to put the answer in the image sorry
<span>A fast-flowing river of air that forms when two air masses of very different temperatures meet is called a jet stream :)</span>
Hi,
I think that you're missing some options, but here they are (let me know if I'm right!
-A population of wolves was introduced
-The amount of disease in the deer population decreased
-More grass was planted
Now, if the gene diversity decreased, it means that a lot of deer died. This could happen because wolves were introduced -this is the correct answer, and the wolves ate some deer.