Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

Solar panels won’t go beyond golf courses
One of the UK’s green targets is to cover 0.4% of its land in solar panels by the end of the decade — less than the area covered by golf courses, known for their high water usage and chemical-intensive maintenance practices.
An analysis by researchers at the University of Lancaster showed solar farms occupy about 0.06% of land today. The vast majority have been built on former farmland. The previous government considered _11_ solar power on the richest agricultural land. It proposed land use guidelines that would discourage solar panel _12_ on the best soils. A study of satellite images revealed that 65% of solar farms were built on former arable (可耕种的) land and 30% on grassland. The rest was former landfill, mines and other uses.
However, Hollie Blay, a senior research associate at Lancaster, said that in absolute terms the area occupied by solar farms was very small. “We’ve worked out that 0.06%, or 15,580 hectares (公顷), is roughly _13_ to a tenth of the area of Greater London,” she said.
There are about a thousand solar farms in the UK, with the current target of _14_ capacity three times by 2030. If all the panels to meet this goal are mounted on the ground, the researchers found solar farms would require a(n) _15_ 80,920 hectares. That would take solar’s share of UK land to 0.4%, or 0.83% of farmland. Estimates _16_ but golf courses are believed to cover about 0.5% of land.
In reality, some of the panels are likely to be installed on the rooftops of large industrial facilities, and some could even be _17_ on vast waters. This means the true share of land is likely to be even lower. Based on current _18_ of where panels are installed, solar would occupy 0.22% of land. “Solar farms are likely to occupy a small land area compared to primary land uses, such as agriculture, and could combine _19_ land uses,” the researchers wrote.
Sheep can be raised between rows of panels and solar farms can help with nature recovery; they can, according to a recent study by a University of Cambridge team, __20__ more birds than nearby arable fields.

20