Answer:
When winter arrives availability of food and water decreases so birds travel to warmer places to escape the cold also to survive over there
Explanation:
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Answer:
The hypothalamus plays ahuge role in the endocrine system. It is responsible for maintaining your body's internal balance of temperature.
When your hypothalamus senses that you're too hot, it sends signals to your sweat glands to make you sweat and cool your temperature.
When the hypothalamus senses that you're too cold, it sends signals to your muscles that make your shiver and create warmth, rising your temperature.
The right answer is A.
Osmosis is a phenomenon that considers only the exchanges between two liquid solutions of different concentrations in liquid phases separated by a semi-permeable wall. Osmosis is a phenomenon of diffusion of matter, demonstrated when solvent molecules pass through a semi-permeable membrane separating two solutions whose solute concentrations are different; the overall transfer of solvent is then from the least concentrated solution (hypotonic medium) to the most concentrated solution (hypertonic medium) to equilibrium (isotonic media).
The diffusion of matter, or chemical diffusion, refers to the natural tendency of a system to render uniform the chemical potential of each of the chemical species it contains.
Chemical diffusion is an irreversible transport phenomenon that tends to homogenize the composition of the medium.
