Hey man. How’s it going. Here is the answer to your question with explanation.
First of all the main idea would be of invasive species and how they are impacting the world badly.
Evidence of this is that the topic sentence or the “first sentence” talks about invasive species and the different types. The second paragraph is all about the details and damages. For this reason the main idea above was chosen by me.
If you have any other questions I would be happy to help so go ahead and leave it in the comments.
Additionally if you have time please check out my channel on y o u t u b e called Nitro Studios as it would really help me out. Thanks.