help answer the questions

1.Channel 6 news, a local news station in Orlando Florida, polls its viewers on twitter about current events at the beginning of the nightly news. The results are discussed at the end of each broadcast. There are at least 3 possible sources of bias when looking at the opinions of the people in Orlando. What are these possible sources of bias? 2. A recent poll of 1,000 randomly selected eligible voters were asked if they voted in the 2016 elections. 120 of those polled said they did not vote in the presidential elections. However a vote count showed that 65% of eligible voters did not vote. Which type of bias was most likely to occur in this poll? Explain. 3. The city of Orlando mailed out 2500 surveys to collect information about residents satisfaction with the city's garbage collection. 383 surveys were returned. What type of bias is present in this study? Explain. 4. A social studies teacher at your school wants to collect data on student's views of the media. He surveys a random sample of 75 students and asks them this question: Based on the media's recent harassment of our President, do you believe the media is delivering fake news?" What type of potential bias is occurring in this method to collect information? Explain