Questions

Portrait and Landscape are modes of page orientations. In landscape mode page is wider than tall and in portrait mode it is inverse of landscape mode.

Although  the image is inverted the mental interpretation of the effect on the retina is as though it is erect

Antoine-Laurent de Lavoisier, a french chemist is considered as the "Father of Modern Chemistry."

The organisms that make their own food through basic elements like water, minerals using sunlight as energy (photosynthesis) are called Autotrophs.

In each segment of the circle, multiply the outer two numbers together and subtract the sum of the outer two numbers in the opposite segment to give the value in the  inner grey segment