Answer:
The bowl of ice cream contains ice cream with temperature below freezing point. A hot body contains more thermal energy than a cold body. Thermal energy only flows from a hot body to a cold body, and not the reverse.
The bowl of ice cream contain less thermal energy than it sorrounding envoirment (air and the kitchen counter), this creates a temperature gradient that forces thermal energy from the sorrounding envoirment into the bowl of ice cream because, according to thermodynamics, all bodies always tend to be in thermal equilibrium with its sorrounding. The thermal energy flows into the bowl of ice cream until it has the same thermal energy with its sorrounding; bringing the thermal gradient between them to zero.
B) These advancements do not contribute to the greenhouse effect.
C) These advancements use cleaner fuels thereby reducing pollution.
D) These advancements are very expensive and not available to everyone.
Answer:
The correct option is D) These advancements are very expensive and not available to everyone.
Explanation:
Consider the statement A. It states that the new technological advances uses renewable sources of energy. This is a positive aspect as the energy can be renewed and replaced. The corn from which this energy is derived can be produced over and over again. Hence, this is a positive aspect, not a negative aspect.
Consider statement B. This statement tells us that the new technological advances will not result in warming the Earth's atmosphere by greenhouse effect. Hence, it is a positive aspect.
Consider statement C. It states that the new technological advances will lead to lesser pollution. Hence, it is a positive aspect.
Now, consider statement D. It is a drawback because technological advances are too expensive to be used by many people. Hence, it is a negative aspect.
Answer:
D) These advancements are very expensive and not available to everyone.
Explanation:
Why does a temperate zone support the greatest variety of organism?
Answer:
Nitrogen like other elements is cycling between air and soil in different forms.
Explanation:
When Nitrogen is in the air, there are some specialized bacteria (Nitrogen fixing bacteria) which are capable of transform gas Nitrogen in "solid" Nitrogen that can be asimilated by plants, these bacteria are asociated with plants and live in symbiosis in their roots. Nitrifying bacteria can also transform the Nitrogen in the air and fix it into the soil and denitrifying bacteria can transform soil Nitrogen ,in atmospheric Nitrogen which is present in the air to keep the Nitrogen cycle.
just took the test and the answer is
they consist of many types of cells working together.