1. What is the role of humans/technology in the introduction of invasive species?

Invasive species are primarily spread by human activities, often unintentionally. People, and the goods we use, travel around the world very quickly, and they often carry uninvited species with them. Ships can carry aquatic organisms in their ballast water, while smaller boats may carry them on their propellers.

Step-by-step explanation: hope i helped mark brainlist plz

160

Step-by-step explanation:

82.2 nearest to 80

38.5 nearest to 40

41.3 nearest to 40

so 80+40+40=160