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
Mutualism is the symbiotic relationship that is good for both species involved as both species benefit
The stomach can sometimes expires problem when digesting hard foods such as cheese and may result in things such as heart burn. an antacid can counter the ragging stomach acids.
Answers: A and C
Explanation: Insulators are non metals and Conductors are metals the best Conductor is copper.
Chromosomes in the nucleus of the cell are bearers of genes
