In the opening paragraph, Woolf describes a garden . It is an atypical flower-bed at the Royal Botanical Gardens. The peacuful nature as a contrast to human's busy life. Woolf is not criticising this aspect of human life – in fact. She only directly equates humans and nature throughout With the description of the garden Woolf created a mood and established a theme.
Most organisms either directly or indirectly use energy from the sun to survive, but not all of them. Plants and some microbes use the energy from the sun to perform photosynthesis.