Answer:
the amount of pollutants in the air is unhealthy
Explanation:
AQI or Air Quality Index assesses the air quality. It indicates how clean or unhealthy the air is and its effects. It is calculated by measuring the concentration of major air pollutants across many locations in the country. The air quality is divided into six categories:
An AQI of 201 means that the air quality is very unhealthy. Everyone is susceptible to health hazards in this air quality.
Relying on a short list of major food crops is a concern.
Explanation:
Different food crops require different types of soil. Thus all kinds of food crops cannot be cultivated in the soil of a country. In addition to that the amount of land available for cultivation is limited by growing settlements and industries.
Thus growing reliance on limited number of food crops is a serious issue. When all the people start depending on a few type of major food crops the production from agriculture won’t be able to feed all the population. The increase in demand for major food crops will result in the increase in their prices.
This would mean that only the wealthy would be able to afford them. This will eventually lead to poverty and decline in economic growth.
Because polystyrene has certain thermal properties that can be used in order to store things and maintain their temperature.
When you store ice cubes in polystyrene containers they won't melt and they'll keep cold because the cold they'll generate in the container wont escape, and the heat from outside wont come in.
Hope it helped,
BioTeacher101
(If you have any questions, feel free to ask them in the comments)
Polystyrene containers are used to store ice cubes because they are good insulators, which helps to preserve the coldness of the ice. These containers are also lightweight and cost-effective, which makes them practical for storage and transportation.
Polystyrene containers are used to store ice cubes due to their excellent insulating properties. Polystyrene foam is a very poor conductor but a good insulator because it traps many small pockets of air, leveraging air's poor thermal conductivity. This material helps maintain the low temperature of the ice, slowing the melting process.
Additionally, polystyrene containers are lightweight and affordable, making them practical for storing and transporting ice. They also won't shatter or break like a glass or metal container if dropped.
#SPJ3
Answer:
Energy "flows" through the ecosystem in the form of carbon-carbon bonds. ... This process releases the energy, which is either used by the organism (to move its muscles, digest food, excrete wastes, think, etc.) or the energy may be lost as heat. The dark arrows represent the movement of this energy
Explanation:
Energy "flows" through the ecosystem in the form of carbon-carbon bonds. ... This process releases the energy, which is either used by the organism (to move its muscles, digest food, excrete wastes, think, etc.) or the energy may be lost as heat. The dark arrows represent the movement of this energy
evidence of evolution
Answer: The breeder should choose the two dogs with those distinctive figures, thus concluding a mix of both breeds. This is evidence of evolution because a new breed will be brought up.
Explanation: Example, breeding a shih tzu and a poodle concludes to a new breed which is a p tzu. Sounds funny, but true. Evolving the dogs world even further.
Answer:
The answer is: It means it is a membrane that will allow certain molecules or ions to pass through it by means of active or passive transport.
Explanation:
All cells are enclosed with a cell membrane. The term, selectively permeable, refers to :
the membrane allows some substances or molecules to enter the cells, and others to be prevented from entering. It also allows substances to leave the cell.
This process can be done by :
Active transport -requires the cell to expend energy to move the materials.
Passive transport- it can be done without using cellular energy.
B) cell wall and large vacuole
C) cell membrane and cytoplasm
D) cell membrane and many vacuoles
Answer:
B) cell wall and large vacuole
Explanation:
A plant cell has tough and rigid cell wall made of cellulose. Presence of cell wall imparts the plant cells a definite angular shape. The angular shape is also the result of presence of large vacuole in the center of the plant cell. The vacuole is filled with water and electrolytes and serve to determine the shape of the plant cell.