Answer: a. solution.
Explanation:
A solution is a substance which consists of two or more substances. The solute and solvent are the components of the solution. The solute dissolves in a solvent.
a. When salt, water, and black pepper mix together they form a solution. The salt and black pepper are solute and the water is the solvent.
b. salt is a solid. It has a crystalline structure.
water is a liquid
black pepper is again solid
These components will mix together to form a solution.
Answer:
The presence of a larger proportion of unsaturated fatty acids in membranes imparts them fluidity at lower temperatures as required to maintain their normal functioning.
Explanation:
The proportion of unsaturated and saturated fatty acids in membranes regulates their fluidity. At lower temperatures, membranes become more rigid. To maintain their normal fluidity, the proportion of the unsaturated fatty acids in membranes is increased. The unsaturated fatty acids have double bonds in their hydrocarbon tails which in turn do not allow their tight packing and impart fluidity to the membrane core.
At higher temperatures, membranes become more fluid and therefore, the proportion of the unsaturated fatty acids is reduced. The tissues of reindeer at the body's extremities such as those near hooves are exposed to surroundings and thereby, lose heat and have lower temperatures. To maintain the fluidity of membranes, the cells of these tissues incorporate more of the unsaturated fatty acids in their membranes as compared to the tissues in the upper legs where the body temperature is relatively higher.
Humans have caused quokka populations to decrease due to animal cruelty. Humans have also introduced predators to quokkas, such as dogs and cats.
Hope this helped!
Biomes in the temperature zone have been changed the most by human activity.
We can define biomes as the community or group of animals and plants that are distributed or categorized on the basis of common characteristics of environment they are in, five<span> major types of biomes are aquatic, desert, forest, grassland, and tundra.</span>
size hence streams are little and rivers are bigger than streams because a stream connects between two or more rivers
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