Zoo staff feed lettuce to a manatee in an exhibition called 'Puerto Manati', which hosts two manatees in a conservation space with an underwater view, at the aquarium of the Guadalajara Zoo in Guadalajara, Mexico August 26, 2021. REUTERS/Fernando Carranza

A manatee eats lettuce in an exhibition called 'Puerto Manati', which hosts two manatees in a conservation space with an underwater view, at the aquarium of the Guadalajara Zoo in Guadalajara, Mexico August 26, 2021. REUTERS/Fernando Carranza

A manatee eats lettuce in an exhibition called 'Puerto Manati', which hosts two manatees in a conservation space with an underwater view, at the aquarium of the Guadalajara Zoo in Guadalajara, Mexico August 26, 2021. REUTERS/Fernando Carranza

A manatee eats lettuce in an exhibition called 'Puerto Manati', which hosts two manatees in a conservation space with an underwater view, at the aquarium of the Guadalajara Zoo in Guadalajara, Mexico August 26, 2021. REUTERS/Fernando Carranza

Zoo staff feed lettuce to a manatee in an exhibition called 'Puerto Manati', which hosts two manatees in a conservation space with an underwater view, at the aquarium of the Guadalajara Zoo in Guadalajara, Mexico August 26, 2021. REUTERS/Fernando Carranza

A man hands over a lettuce to another man as prices are displayed at a weekly street market in Rio de Janeiro, Brazil July 8, 2021. REUTERS/Amanda Perobelli

French snail grower and soap maker Damien Desrocher feeds a snail with a lettuce leaf before extracting slime that he used to make soap bars in his snail enclosure in Wahagnies, near Lille, France, May 11, 2021. Picture taken May 11, 2021. REUTERS/Ardee Napolitano

Farmers work in a lettuce field in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

Farmers work in a lettuce field in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

Farmers work in a lettuce field in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

A field of lettuce in seen in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

A farmer holds lettuce as he stands in a lettuce field in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

Farmers work in a lettuce field in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

Hussein Madbouh, a farmer, walks in a lettuce field in Rayak, Bekaa Valley, Lebanon, May 10, 2021. Picture taken May 10, 2021. REUTERS/Mohamed Azakir

Umm Bashir al-Saour, 37-year-old widow, washes lettuce in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki

Umm Bashir al-Saour, 37-year-old widow, cuts lettuce in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki

Virginia Galan works on her lettuce garden in the backyard of her home amid concerns about the spread of the coronavirus disease (COVID-19) in Havana, Cuba, June 26, 2020. Picture taken June 26, 2020. REUTERS/Alexandre Meneghini

A vegetable seller works on lettuce at a market amid the coronavirus disease (COVID-19) outbreak in Adjame a neighbourhood of Abidjan, Ivory Coast June 18, 2020. REUTERS/Thierry Gouegnon.

A man in a mask walks by lettuce in new planter boxes, as tents are seen in the background, near a newly made community garden while protesters demonstrating against racial inequality occupy space at the CHOP area near the Seattle Police Department's East Precinct in Seattle, Washington, U.S. June 16, 2020. REUTERS/Lindsey Wasson

Farmers carry containers with lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

A farmer carries a container with lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

Farmers carry containers with lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

A farmer harvests lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

Farmers load a truck with rotten lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

Farmers load a truck with rotten lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

A child carries a container with rotten lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

A farmer piles rotten lettuces at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

Livestock eat rotten lettuce at a farm during the nationwide quarantine as coronavirus disease (COVID-19) continues in La Grita, Venezuela April 18, 2020. Picture taken April 18, 2020. REUTERS/Carlos Eduardo Ramirez

Roberto Banos and Tomas Alduaga pick lettuce at the Lurkoi organic farm, during the coronavirus disease (COVID-19) outbreak, Busturia, Spain, April 20, 2020. Picture taken April 20, 2020. REUTERS/Vincent West

A member of Rural Collserola picks up lettuce and mint plant in an ecological field during Earth Day, in the Collserola Mountains near Barcelona as the spread of the coronavirus disease (COVID-19) continues, the Collserola Mountains near Barcelona, Spain, April 22, 2020. REUTERS/Nacho Doce

A member of Rural Collserola picks up lettuce and mint plant in an ecological field during Earth Day, in the Collserola Mountains near Barcelona as the spread of the coronavirus disease (COVID-19) continues, the Collserola Mountains near Barcelona, Spain, April 22, 2020. REUTERS/Nacho Doce

Members of Rural Collserola pick up lettuce and mint plant in an ecological field during Earth Day, in the Collserola Mountains near Barcelona as the spread of the coronavirus disease (COVID-19) continues, the Collserola Mountains near Barcelona, Spain, April 22, 2020. REUTERS/Nacho Doce

A driver plows acres of ready-to-pick romaine lettuce into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

California farmer Jack Vessey stands in what remains of his field of romaine lettuce after having to plow it under due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

California farmer Jack Vessey stands in what remains of his field of romaine lettuce after having to plow it under due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Some of the acres of romaine lettuce is shown after having been plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake TPX IMAGES OF THE DAY

Some of the acres of romaine lettuce are shown after having been plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Some of the acres of romaine lettuce is shown after having been plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of romaine lettuce are shown after being plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of romaine lettuce are shown after being plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of romaine lettuce are shown after being plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are shown after being plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are shown before being plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are shown before being plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

Acres of ready-to-pick romaine lettuce are plowed into the ground due to the loss of the restaurant market during the outbreak of the coronavirus disease (COVID-19) in Holtville, California, U.S., April 15, 2020. REUTERS/Mike Blake

A farmer feeds iceberg lettuce to his buffalo during a 21-day nationwide lockdown to slow the spreading of coronavirus disease (COVID-19), at Bhuinj village in Satara district in the western state of Maharashtra, India, April 1, 2020. Picture taken April 1, 2020. REUTERS/Rajendra Jadhav

A field of lettuce is seen in the greenhouse of vegetable grower Didier Lenoble during the outbreak of Coronavirus disease (COVID-19) in Perigny-sur-Yerres, France, March 31, 2020. Picture taken March 31, 2020. REUTERS/Charles Platiau

Carrie Chlebanowski sanitizes a delivery box for lettuce on her farm in Alex, Oklahoma, U.S., March 20, 2020. Picture taken March 20, 2020. REUTERS/Nick Oxford

Carrie Chlebanowski washes spring mix lettuce on her farm in Alex, Oklahoma, U.S., March 20, 2020. Picture taken March 20, 2020. REUTERS/Nick Oxford

Vegetable growers hold lettuces before giving away their products as they take part in a protest against a four-day crop sales strike outside the Casa Rosada Presidential Palace organized by Argentina's main farm groups, in Buenos Aires, Argentina March 10, 2020. REUTERS/Agustin Marcarian

A man hangs up lettuce at the door of a restaurant for Chinese dragons, during celebrations of the Chinese Lunar New Year, in Lima, Peru January 25, 2020. Picture taken January 25, 2020. REUTERS/Alessandro Cinque

Aymara journalist and media producer Sonia Quispe, 27, washes lettuce on a visit to her hometown in Vilaque, a farmers community located on the outskirts of El Alto, Bolivia August 31, 2019. "In these 13 years of Evo Morales government I believe the most humble people have benefited, the farmers that live off the land," she said, adding that while Evo wasn't perfect, only he could keep driving the process of change in the country. "There are many problems and issues to be fixed but I believe in him," she said. REUTERS/Manuel Seoane SEARCH "AYMARA ELECTIONS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A green sea turtle is surrounded by lettuce as it swims in a pool at the Israeli Sea Turtle Rescue Center, in Mikhmoret north of Tel Aviv, Israel September 23, 2019. Picture taken September 23, 2019. REUTERS/Amir Cohen

Hydroponic lettuce is pictured on the small farm of Erick Solis in San Jose, Costa Rica May 2, 2019. REUTERS/Juan Carlos Ulate