Answer:
During nitrogen fixation specialised bacteria living in the earth's atmosphere convert nitrogen taken from the geosphere
Its "C" because the earth only has a certain amount of oil but yet we have endless amount of sun, solar, and wind
Answer:
Sucrose is common sugar. It is a disaccharide, a molecule composed of two monosaccharides, glucose and fructose.
Answer:
Option D, the "biological ladder"
Explanation:
The food chain is the network of organism in which all are dependent on each other for their food, energy source and survival.
The circle of life depicts the time frame starting from origin of a life form till its death and the intermediate stages.
The tree of life basically determines which organism has evolved from which other organisms.
The biological ladder represents the development of species from simple form to a much complex form.
Hence, option D is the right metaphor
