The answer is (A) 1. Curvilinear lines; 2. Diagonal lines
Pathogens are the main factor for plant disease in forest ecosystems. They can cause disruption to tree functions. Although some positives reside along with these diseases. They are necessary for justifying control measures. They are one way that institutions and scientists decide what is important to study. These diseases can be used to justify funding for research or management. Ecologically, they can be a way of determining what factors are important in determining forest structure and dynamics.
Since you have provided no options, the best I can do is to describe lithography and hope that it helps:
In the first step, an image is drawn on a stone, typically with wax or oil. Then ink is spread on the whole stone, but it will not stay on the parts with oil or wax, only on the other parts. Then paper is pressed against the stone, and an image appears, because the ink adheres to the paper- you can then make multiple copies of the image.
Lady with an Ermine by Leonardo da Vinci between 1489 and 1490.
