Answer:
Concentration gradient.
Explanation:
Diffusion may be defined as the process of the movement of solute particles down the concentration gradient. This process does not require the expenditure of energy.
The main driving force in diffusion is the concentration gradient. The molecules generally move from its region of the higher concentration towards the region its lower concentration.
Thus, the correct answer is option (3).
Cell anemia, the increased synthesis of Hb F allows the patient to use Hb F
The cerebellum is located in the posterior cranial fossa. It is at the inferior or underneath the occipital lobe of the cerebrum.
A food web describes the flow<span> of </span>energy<span> and nutrients </span>through<span> an ecosystem, ... Organisms </span>can<span> be organized into trophic levels: primary producer, primary ... In both </span>food webs<span> and </span>food chains<span>, arrows point from an organism that is </span>consumed<span> to ... of trophic </span>energy<span> transfers, the </span>amount of energy<span>remaining in the </span>food chain<span> ...</span>
