People and plants; the Red Book; plants review

People affect plants both directly and indirectly. Direct harm: cutting forests, starting fires, picking and trampling plants. Indirect harm: polluting air, water and soil, and car exhaust. For example, saksovul is excellent fuel, so it was cut down heavily, and because it grows slowly it became rare. But people also help plants. About 10,000 years ago people began to grow plants and kept the seeds of the biggest, tastiest fruits; that is why cultivated carrots and maize differ a lot from their wild ancestors. Botanical gardens were set up to study plants; the Tashkent Botanical Garden grows thousands of plant species. To reduce tree cutting we should sort waste paper: it can be made into paper and cardboard again.