In one or two sentences, describe how an invasive species can be introduced into an ecosystem by humans. Name a specific situation and species and how it would affect the ecosystem.

Why do you need to classify the size of a particle

Studying at a frantic pace to absorb a lot of information in a short period of time is an example of

Arecent survey shows that the probability of a college student drinking alcohol is 0.6. further, given that the student is over 21 years old, the probability of drinking alcohol is 0.8. it is also known that 30% of the college students are over 21 years old. the probability of drinking or being over 21 years old is