Ecosystem
Ecosystem refers to the community made up of all the living organisms (biotic component), their physical environment and all their interactions in a given space.
The biotic and abiotic components of the ecosystem are linked with the help of energy flows and nutrient cycles.
It is B, as one organism is benefiting, while the other is harmed
Testosterone is an example of an androgen.
Testosterone belongs to a class of male hormones called androgens, which are sometimes called steroids or anabolic steroids. IN men, testosterone is mainly produced in the testes. In women's bodies, testosterone is produced in the ovaries, adrenal glands, fat cells, and skin cells.
Testosterone products come in different forms, including gels, injectable solutions, patches, pills and pellets implanted under the skin. Once a patient starts testosterone therapy, the patient usually undergoes lifelong treatment. Testosterone is an anabolic steroid that occurs naturally in the human body. “Anabolic” means to build up or promote growth.
Hence, A is the correct option
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When light enters the retina, it first passes through the Ganglion cell layer, then the Bipolar cell layer, before reaching the photoreceptors
Each cell contians 23 pairs of chromosomes
