Ahead of the march, local police had expressed concern that the popularity of the event could lead to risks to protesters.
"I will not stand aside and watch, I will not be silenced while the world is on fire, will you?"
Organisers said they were "honoured" to be welcoming Greta to Bristol for their 10th strike.
She received the honour, from Bristol University, for using her platform as a world-leading ornithologist to promote greater diversity in the wildlife and conservation sectors.
Avon and Somerset Police and Bristol City Council have warned of "major disruption" during the event, which is due to start at 11:00 GMT, but stressed they would be "working to ensure Bristol is open as usual".
Dr Patrick Hart, a GP and member of Doctors for Extinction Rebellion, said: "We're speaking out to raise the alarm on the impending health crisis".
She walked at the front of the crowds in the rain, behind a green banner which translated from Swedish as School Strike for Climate.
His heavily pregnant wife, several doctors, staff and patients at the hospital are thought to have caught the virus from him. Inter, who are atop the league, confirmed on Saturday night that their match at 17th-placed Sampdoria would not be played.
But it was slim pickings outside of her glorious innings, with India fortunate New Zealand weren't more polished in the field. But there are some niggling issues that they would like to address before they enter the business end of the World Cup.
South Korea has released 26 fully recovered novel coronavirus patients from hospitals as of Friday morning, the KCDC said. The infection numbers in the southeastern city of Daegu and North Gyeongsang stand at 1,314 and 394, respectively.
After the bell, S&P 500 e-mini futures were up about 1% and the Invesco QQQ Trust ETF was up 1.3% in extended trade. In some, the market came within a breath of falling into a bear market, including a 19.8% fall in late 2018.
He initiated a major literacy program. "But sure, Bernie, let's talk about his literacy program", Michael Bloomberg tweeted. After insisting he has opposed authoritarianism consistently, he then defended authoritarianism on the debate stage.
The staffer told school officials that a family member also on the trip became sick Tuesday and was taken to the hospital. The family member is being "treated, monitored and quarantined", the letter said.
Facing lawmakers' questions Thursday about the new organizational chart, Azar said Pence would now fill that role. The stock market is having its worst week since 2008 . " Mike Pence literally does not believe in science".
Clive will be greatly missed by his second wife, Janet, daughters Teri and Dayna, four grandchildren and four great-grandchildren. So I was determined not to write about a detective, secret agent or undercover investigator or deal in murder mysteries.
Global markets have continued to fall as the virus infects over 50 countries. It could represent the first such case of the illness spreading in the U.S.
OR confirms case of coronavirus with no known travel connection
More than 80,000 people worldwide have been infected and about 3,000 have died - majority in China, where the epidemic started. Staying current on your vaccinations, including the flu vaccine, eating well and exercising all help your body stay resilient.
British Passenger Of Virus-hit Japan Ship Dies
The city of Osaka also said it will close its kindergartens, elementary and junior high schools from Saturday for two weeks. He said the two countries were coordinating to ensure the "once-in-a-decade event" would be a success.
Prince Harry meets Bon Jovi
The new single is in aid of the Invictus Games Foundation , which oversees the Invictus Games and which Harry founded. Jon Bon Jovi talking about his musical collaboration with Prince Harry on "The Chris Evans Show" on February 26, 2020.
Manchester City launch their appeal to CAS
CAS confirms City have lodged an appeal although could not say when a verdict would be reached. They would also be banned from European competition in the 2021-22 season.
Panic in Lagos as Nigeria confirms first Coronavirus
Algeria, Egypt, and Nigeria, have reported one case each, leaving experts fearing that many more cases could be going unreported. Meanwhile, information available to YEN.com.gh shows that the first case of the coronavirus has been recorded in Africa.