What can you do to prevent invasive species from entering texas freshwater ecosystem? mark all that apply

To prevent the invasive species from entering texas freshwater ecosystem  the following steps should be taken they are described below.

Explanation:

The invasive species are dangerous to natural resources because they destroy the natural resources and ecological system.

These invasive species are controlled by the biological control and mechanical control.

Thus to prevent the invasive species from entering texas freshwater ecosystem the following steps are taken they are

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )