Tomatoes are triggered to turn redby a chemical called ethylene. ... Consistent winds can carry the ethylene gas away from the fruit and slow the ripening process. If you find that your tomatoes fall off the vine, either knocked off or due to frost, before they turn red, you can place ...
2.A 根据后句The hot sun glows(发光) yellow to orange. In warm summer weather, strawberries and tomatoes turn red. These may be some of the reasons why we say red, yellow and orange are warm colors.炎热的太阳发出黄色到橙色的光.在温暖的夏天,草莓和西红柿会变红.这...